[css-flexbox] Use 'Animation type'.

Author: tabatkins

css-flexbox/Overview.bs

@@ -1200,7 +1200,7 @@ Display Order: the 'order' property</h3>
 	Inherited: no
 	Computed value: specified value
 	Media: visual
-	Animatable: yes
+	Animation type: integer
 	</pre>
 
 	The 'order' property controls the order in which
@@ -1661,7 +1661,7 @@ The 'flex-grow' property</h4>
 	Inherited: no
 	Computed value: specified value
 	Media: visual
-	Animatable: yes
+	Animation type: number
 	</pre>
 
 	Advisement: Authors are encouraged to control flexibility using the 'flex' shorthand
@@ -1684,7 +1684,7 @@ The 'flex-shrink' property</h4>
 	Inherited: no
 	Computed value: specified value
 	Media: visual
-	Animatable: yes
+	Animation type: number
 	</pre>
 
 	Advisement: Authors are encouraged to control flexibility using the 'flex' shorthand
@@ -1708,7 +1708,7 @@ The 'flex-basis' property</h4>
 	Computed value: as specified, with lengths made absolute
 	Percentages: relative to the <a>flex container's</a> inner <a>main size</a>
 	Media: visual
-	Animatable: as 'width'
+	Animation type: as 'width'
 	</pre>
 
 	Advisement: Authors are encouraged to control flexibility using the 'flex' shorthand