Update the meetings link to use an absolute URL

Update the meetings link in sig-docs to use an absolute URL.

Author: helayoty

sig-docs/blog-subproject/README.md

@@ -6,7 +6,7 @@ This section covers documentation, processes, and roles for the [Kubernetes blog
 
 ## Meetings
 
-See [meetings](/kubernetes/community/tree/master/sig-docs#meetings) for SIG Docs
+See [meetings](https://github.com/kubernetes/community/tree/master/sig-docs#meetings) for SIG Docs
 
 
 ## Subproject contributors