[css-animations] Fix some broken links caused by smart quotes

Author: birtles

css-animations/Overview.bs

@@ -91,8 +91,8 @@ Values</h2>
 	<<length>> value type as used in this specification.
 
 	In addition to the property-specific values listed in their definitions,
-	all properties defined in this specification also accept the ‘initial’
-	and ‘inherit’ keyword as their property value. For readability it has
+	all properties defined in this specification also accept the ''initial''
+	and ''inherit'' keyword as their property value. For readability it has
 	not been repeated explicitly.
 
 <h2 id="animations">
@@ -407,8 +407,8 @@ The 'animation-name' property</h3>
 	values of 'animation-name', the UA must calculate its used value by repeating the list of values until
 	there are enough. This truncation or repetition does not affect the computed value.
 
-	Note: This is analogous to the behavior of the ‘background-*’properties, with ‘background-image’ analogous
-	to 'animation-name'.
+	Note: This is analogous to the behavior of the 'background-*' properties, with
+	'background-image' analogous to 'animation-name'.
 
 	<pre class='propdef'>
 	Name: animation-name
@@ -702,7 +702,7 @@ The 'animation-fill-mode' property</h3>
 
 	The 'animation-fill-mode' property defines what values are applied by the animation
 	outside the  time it is executing. By default, an animation will not affect property
-	values between the time it is applied (the ‘animation-name’ property is set on an
+	values between the time it is applied (the 'animation-name' property is set on an
 	element) and the time it begins execution (which is determined by the 'animation-delay'
 	property). Also, by default an animation does not affect property values after the
 	animation ends (determined by the 'animation-duration' and 'animation-iteration-count' properties).