Merge pull request #11009 from kustodian/fix-pattern-documentation

Fixed documentation for host pattern portions

docsite/rst/intro_patterns.rst

@@ -74,7 +74,7 @@ As an advanced usage, you can also select the numbered server in a group::
 
 Or a portion of servers in a group::
 
-    webservers[0:25]
+    webservers[0-25]
 
 Most people don't specify patterns as regular expressions, but you can.  Just start the pattern with a '~'::