Add required unit for dimension in range notation

Author: cdoublev

css-animations-1/Overview.bs

@@ -504,7 +504,7 @@ The 'animation-duration' property</h3>
 
 	<pre class='propdef'>
 	Name: animation-duration
-	Value: <<time [0,∞]>>#
+	Value: <<time [0s,∞]>>#
 	Initial: 0s
 	Applies to: all elements
 	Inherited: no
@@ -515,7 +515,7 @@ The 'animation-duration' property</h3>
 	</pre>
 
 <dl>
-<dt><dfn value for=animation-duration><<time [0,∞]>></dfn>
+<dt><dfn value for=animation-duration><<time [0s,∞]>></dfn>
 <dd>
 The <<time>> specifies the length of time that an animation takes to complete one cycle.
 A negative <<time>> is invalid.

css-fonts-4/Overview.bs

@@ -787,7 +787,7 @@ Font style: the 'font-style!!property' property</h3>
 
     <pre class="propdef">
     Name: font-style
-    Value: normal | italic | oblique <<angle [-90,90]>>?
+    Value: normal | italic | oblique <<angle [-90deg,90deg]>>?
     Initial: normal
     Applies to: all elements and text
     Inherited: yes
@@ -825,7 +825,7 @@ Font style: the 'font-style!!property' property</h3>
             Matches against a font that is labeled as an italic face,
             or an oblique face if one does not exist.
 
-        <dt><dfn>oblique <<angle [-90,90]>>?</dfn>
+        <dt><dfn>oblique <<angle [-90deg,90deg]>>?</dfn>
         <dd>
             Controls matching against an oblique face.
             Positive angles represent a clockwise slant;

css-transitions-1/Overview.bs

@@ -315,7 +315,7 @@ Value Definitions {#values}
       </p>
       <pre class="propdef">
         Name: transition-duration
-        Value: <<time [0,∞]>>#
+        Value: <<time [0s,∞]>>#
         Initial: ''0s''
         Applies to: all elements
         Inherited: no