[css-text-3] Get rid of mixed space/tabs indentation

There are still two styles in this document, but at least now each
section is internally consistent, and there are no more lines
nonsensical mixes.

Author: frivoal

css-text-3/Overview.bs

@@ -46,11 +46,11 @@ spec:css-fonts-4; type:property; text:font-feature-settings
     .egbidiwsaB { background:yellow;border:2px dotted white }
     .egbidiwsbC { border:2px dotted red }
 
-	.hyphens-ex {
-		border: thin solid black;
-		display: inline-block;
-		padding: 4pt;
-	}
+    .hyphens-ex {
+      border: thin solid black;
+      display: inline-block;
+      padding: 4pt;
+    }
 
     /* Start Letter-spacing Tutorial */
     .ls-ex {
@@ -908,28 +908,28 @@ Text Processing</h3>
         <td>Collapse</td>
         <td>Collapse</td>
         <td>Wrap</td>
-	<td>Remove</td>
+        <td>Remove</td>
       </tr>
       <tr>
         <th>''pre''</th>
         <td>Preserve</td>
         <td>Preserve</td>
         <td>No wrap</td>
-	<td>Preserve</td>
+        <td>Preserve</td>
       </tr>
       <tr>
         <th>''nowrap''</th>
         <td>Collapse</td>
         <td>Collapse</td>
         <td>No wrap</td>
-	<td>Remove</td>
+        <td>Remove</td>
       </tr>
       <tr>
         <th>''pre-wrap''</th>
         <td>Preserve</td>
         <td>Preserve</td>
         <td>Wrap</td>
-	<td>Hang</td>
+        <td>Hang</td>
       </tr>
       <tr>
         <th>''break-spaces''</th>
@@ -1210,9 +1210,9 @@ Text Processing</h3>
             white-space/white-space-empty-text-sibling.html
           </wpt>
           <wpt pathprefix="/css/CSS2/text/">
-	    white-space-001.xht
-	    white-space-003.xht
-	    white-space-005.xht
+            white-space-001.xht
+            white-space-003.xht
+            white-space-005.xht
             white-space-collapsing-001.xht
             white-space-collapsing-002.xht
             white-space-collapsing-004.xht
@@ -1391,7 +1391,7 @@ Text Processing</h3>
 
       <ul>
         <li>If the character immediately before or immediately after the [=segment break=]
-	  is the zero-width space character (U+200B), then the break
+          is the zero-width space character (U+200B), then the break
           is removed, leaving behind the zero-width space.
 
           <wpt>
@@ -1687,8 +1687,8 @@ Text Processing</h3>
              allows users to see the space when selecting or editing text.
           <li>If 'white-space' is set to ''break-spaces'',
              [=hanging=] or collapsing the advance width of the [=spaces=],
-	     [=tabs=],
-	     or [=other space separators=]
+             [=tabs=],
+             or [=other space separators=]
              at the end of the line is not allowed;
              those that overflow must <a>wrap</a> to the next line.
 
@@ -2572,7 +2572,7 @@ Line Breaking Details</h3>
       <style>
       #jp-title-break td samp,
       #jp-title-break td pre {
-	font-size: 1.5em;
+        font-size: 1.5em;
         width: 9em;
         line-height: 2;
         padding: 0.5em 1em;
@@ -2611,12 +2611,12 @@ Line Breaking Details</h3>
         <th scope=row>Expected rendering
         <td>
           <pre lang=ja>
-	  窓ぎわのトットちゃ
-	  ん</pre>
+          窓ぎわのトットちゃ
+          ん</pre>
         <td>
           <pre lang=ja>
-	  窓ぎわの
-	  トットちゃん</pre>
+          窓ぎわの
+          トットちゃん</pre>
       <tr>
         <th scope=row>Result in your browser
         <td>
@@ -3231,8 +3231,8 @@ Line Breaking Details</h3>
         overflow-wrap/overflow-wrap-min-content-size-001.html
         overflow-wrap/overflow-wrap-min-content-size-002.html
         overflow-wrap/overflow-wrap-min-content-size-003.html
-	overflow-wrap/overflow-wrap-anywhere-001.html
-	overflow-wrap/overflow-wrap-anywhere-003.html
+        overflow-wrap/overflow-wrap-anywhere-001.html
+        overflow-wrap/overflow-wrap-anywhere-003.html
         overflow-wrap/overflow-wrap-anywhere-fit-content-001.html
         overflow-wrap/overflow-wrap-cluster-002.html
         overflow-wrap/overflow-wrap-shaping-002.html
@@ -3248,8 +3248,8 @@ Line Breaking Details</h3>
 
       <wpt>
         overflow-wrap/overflow-wrap-001.html
-	overflow-wrap/overflow-wrap-break-word-001.html
-	overflow-wrap/overflow-wrap-break-word-003.html
+        overflow-wrap/overflow-wrap-break-word-001.html
+        overflow-wrap/overflow-wrap-break-word-003.html
         overflow-wrap/overflow-wrap-break-word-008.html
         overflow-wrap/overflow-wrap-min-content-size-004.html
         overflow-wrap/overflow-wrap-break-word-fit-content-001.html
@@ -3258,7 +3258,7 @@ Line Breaking Details</h3>
         overflow-wrap/overflow-wrap-break-word-long-crash.html
         white-space/break-spaces-before-first-char-008.html
         white-space/break-spaces-before-first-char-012.html
-	overflow-wrap/overflow-wrap-break-word-keep-all-001.html
+        overflow-wrap/overflow-wrap-break-word-keep-all-001.html
       </wpt>
     </dl>
 
@@ -4921,13 +4921,13 @@ Tagging Content by Writing System</h2>
 	not the conventions of that language in a different writing system,
 	which would be inappropriate to the writing system used in this case.
 
-        <wpt>
-          writing-system/writing-system-font-001.html
-          writing-system/writing-system-text-transform-001.html
-          writing-system/writing-system-segment-break-001.html
-          writing-system/writing-system-line-break-001.html
-          writing-system/writing-system-line-break-002.html
-        </wpt>
+	<wpt>
+		writing-system/writing-system-font-001.html
+		writing-system/writing-system-text-transform-001.html
+		writing-system/writing-system-segment-break-001.html
+		writing-system/writing-system-line-break-001.html
+		writing-system/writing-system-line-break-002.html
+	</wpt>
 
 	The full correspondence between languages and their most common writing system
 	is out of scope for this document.
@@ -4941,10 +4941,10 @@ Tagging Content by Writing System</h2>
 		then the [=writing system=] is <dfn noexport for=writing-system>Japanese</dfn>.
 
 
-                <wpt>
-                  writing-system/writing-system-line-break-002.html
-                  writing-system/writing-system-segment-break-001.html
-                </wpt>
+		<wpt>
+			writing-system/writing-system-line-break-002.html
+			writing-system/writing-system-segment-break-001.html
+		</wpt>
 	* If the [=content language=] is Korean and the [=writing system=] is unspecified,
 		or for any [=content language=] if the [=writing system=] to specified to be one of the ''Kore'', ''Hang'', or ''Jamo'' [[ISO15924]] codes,
 		then the [=writing system=] is <dfn noexport for=writing-system>Korean</dfn>.