Fixes adding new GHC documentation link (#873)

jkachmar · web-flow · commit 12bac17df7fd · 2020-10-11T09:55:55.000+10:00
Also makes capitalization a bit more consistent.
diff --git a/docs/reference/supported-ghc-versions.md b/docs/reference/supported-ghc-versions.md
@@ -29,4 +29,4 @@ for a list of all the valid `compiler-nix-names`.
 
 See also:
 
-* [Instructions on adding new ghc versions](adding-new-ghc.md).
+* [Instructions on adding new GHC versions](../dev/adding-new-ghc.md).

Original file line number	Diff line number	Diff line change
@@ -29,4 +29,4 @@ for a list of all the valid `compiler-nix-names`.
`29`	`29`
`30`	`30`	`See also:`
`31`	`31`
`32`		`-* [Instructions on adding new ghc versions](adding-new-ghc.md).`
	`32`	`+* [Instructions on adding new GHC versions](../dev/adding-new-ghc.md).`