README/golint: improve example, link to godoc, make golint happy

License: MIT
Signed-off-by: Hector Sanjuan <[email protected]>

Author: hsanjuan

README.md

@@ -39,7 +39,7 @@ go get -u github.com/whyrusleeping/gx
 go get -u github.com/whyrusleeping/gx-go
 cd <your-project-repository>
 gx init
-gx import github.com/multiformats/go-multihash
+gx import https://github.com/multiformats/go-multistream
 gx install --global
 gx-go --rewrite
 ```