"Here" as the title for link has no semantics (#2751)

A page could have 50 links, every one with the link text "Here" and it doesn't mean anything.
Search engines rely on the fact that the link text says something about the link. The text "Here" doesn't mean anything to search engines.  Using "Here" as link text has no semantic value.

Author: KennethKinLum

content/docs/reconciliation.md

@@ -142,7 +142,7 @@ As a last resort, you can pass an item's index in the array as a key. This can w
 
 Reorders can also cause issues with component state when indexes are used as keys. Component instances are updated and reused based on their key. If the key is an index, moving an item changes it. As a result, component state for things like uncontrolled inputs can get mixed up and updated in unexpected ways.
 
-[Here](codepen://reconciliation/index-used-as-key) is an example of the issues that can be caused by using indexes as keys on CodePen, and [here](codepen://reconciliation/no-index-used-as-key) is an updated version of the same example showing how not using indexes as keys will fix these reordering, sorting, and prepending issues.
+Here is [an example of the issues that can be caused by using indexes as keys](codepen://reconciliation/index-used-as-key) on CodePen, and here is [an updated version of the same example showing how not using indexes as keys will fix these reordering, sorting, and prepending issues](codepen://reconciliation/no-index-used-as-key).
 
 ## Tradeoffs {#tradeoffs}