doc: Correct broken document links for all versions of the driver (#309)

Author: mikefero

cpp-driver/docs.yaml

@@ -53,6 +53,7 @@ rewrites:
   - http://www.datastax.com/documentation/cql/3.1: https://docs.datastax.com/en/archived/cql/3.1
   - http://www.datastax.com/documentation/cassandra/2.: https://docs.datastax.com/en/archived/cassandra/2.
   - http://downloads.datastax.com/cpp-driver: https://downloads.datastax.com/cpp-driver/
+  - http://www.datastax.com/dev/blog/datastax-c-driver(.*)$: https://www.datastax.com/blog/
 rules:
   use_path_nav_files_only: true
 

docs.yaml

@@ -76,7 +76,7 @@ rewrites:
     replace: /dse_features/graph
 links:
   - title: Releases
-    href:  http://downloads.datastax.com/cpp-driver
+    href:  http://downloads.datastax.com/cpp-driver/
   - title: Docs
     href:  http://docs.datastax.com/en/developer/cpp-driver-dse
   - title: Issues