[css-text-3] Remove percentage word-spacing in preparation for redefining it. w3c#2165

Author: fantasai

css-text-3/Overview.bs

@@ -1880,11 +1880,11 @@ Word Spacing: the 'word-spacing' property</h3>
 
   <pre class="propdef">
   Name: word-spacing
-  Value: normal | <<length-percentage>>
+  Value: normal | <<length>>
   Initial: normal
   Applies to: <a>inline boxes</a>
   Inherited: yes
-  Percentages: refers to width of the affected glyph
+  Percentages: N/A
   Computed value: the keyword ''word-spacing/normal'' or a computed <<length-percentage>> value
   Animation type: by computed value type
   Canonical order: n/a
@@ -1902,9 +1902,6 @@ Word Spacing: the 'word-spacing' property</h3>
     <dt><dfn>&lt;length&gt;</dfn>
       <dd>Specifies extra spacing <em>in addition to</em>
         the intrinsic inter-word spacing defined by the font.
-    <dt><dfn>&lt;percentage&gt;</dfn>
-      <dd>Specifies the additional spacing as a percentage of the affected
-        character's advance width.
   </dl>
 
   <p>Additional spacing is applied to each <a>word separator</a>
@@ -1913,19 +1910,6 @@ Word Spacing: the 'word-spacing' property</h3>
     unless otherwise dictated by typographic tradition.
     Values may be negative, but there may be implementation-dependent limits.
 
-  <div class="example">
-    <p>The following example will make all the spaces between words in Arabic
-    be rendered as zero-width, and double the width of each space in English:
-
-    <pre>
-      :lang(ar) { word-spacing: -100%; }
-      :lang(en) { word-spacing: 100%; }</pre>
-
-    <p>The following example will <em>add</em> half the the width of the
-      &ldquo;0&rdquo; glyph to word spacing character [[CSS-VALUES-3]]:
-    <pre>p { word-spacing: 0.5ch; }</pre>
-  </div>
-
     <p><dfn id="word-separator" lt="word-separator character | word separator">Word-separator characters</dfn>
       are <a>typographic character units</a> whose purpose and general usage is to separate words.
       In [[UNICODE]] this includes