DOCS-298 DOCS-299 edit to internals document

Author: Bob Grabar

source/core/sharding-internals.txt

@@ -509,20 +509,20 @@ following command:
 
 The config database includes the following collections used by sharding:
 
-- ``chunks``
+.. data:: chunks
 
-- ``databases``
+.. data:: databases
 
-- ``lockpings``
+.. data:: lockpings
 
-- ``locks``
+.. data:: locks
 
-- ``mongos``
+.. data:: mongos
 
-- ``settings``
+.. data:: settings
 
-- ``shards``
+.. data:: shards
 
-- ``system.indexes``
+.. data:: system.indexes
 
-- ``version``
+.. data:: version