Fixed README urls.

README.md

@@ -8,8 +8,8 @@ Import path
 
 The yaml package should be imported as:
 
-  * [gonuts.org/v1/yaml](gonuts.org/v1/yaml)
+  * [gonuts.org/v1/yaml](https://gonuts.org/v1/yaml)
 
 This URL works with "go get", and it also leads to the package documentation
 if opened with a browser. The package API for yaml v1 will remain stable as
-described in [gonuts.org](gonuts.org).
+described in [gonuts.org](https://gonuts.org).