[css-cascade] Link cascade to its definition.

Author: fantasai

css-cascade-3/Overview.bs

@@ -894,13 +894,14 @@ Inheritance</h3>
 	which has no parent element,
 	the <a>inherited value</a> is the <a>initial value</a> of the property.
 
-	(Pseudo-elements inherit according to a fictional tag sequence described for each pseudo-element [[!SELECT]].)
+	[=Pseudo-elements=] inherit according to the fictional tag sequence
+	described for each [=pseudo-element=]. [[!SELECT]]
 
 	Some properties are <dfn export lt="inherited property">inherited properties</dfn>,
 	as defined in their property definition table.
 	This means that,
-	unless the cascade results in a value,
-	the value will be determined by inheritance.
+	unless the [=cascade=] results in a value,
+	the value will be determined by [=inheritance=].
 
 	A property can also be explicitly inherited. See the ''inherit'' keyword.
 

css-cascade-4/Overview.bs

@@ -1065,8 +1065,8 @@ Inheritance</h3>
 	Some properties are <dfn export lt="inherited property">inherited properties</dfn>,
 	as defined in their property definition table.
 	This means that,
-	unless the cascade results in a value,
-	the value will be determined by inheritance.
+	unless the [=cascade=] results in a value,
+	the value will be determined by [=inheritance=].
 
 	A property can also be explicitly inherited. See the ''inherit'' keyword.