Merge pull request #1207 from bbkane/patch-1

Add link to pkg.go.dev docs in manual.md

docs/v2/manual.md

@@ -45,7 +45,7 @@ cli v2 manual
 There are a small set of breaking changes between v1 and v2.
 Converting is relatively straightforward and typically takes less than
 an hour. Specific steps are included in
-[Migration Guide: v1 to v2](../migrate-v1-to-v2.md).
+[Migration Guide: v1 to v2](../migrate-v1-to-v2.md). Also see the [pkg.go.dev docs](https://pkg.go.dev/github.com/urfave/cli/v2) for v2 API documentation.
 
 ## Getting Started