Merge pull request rails#10664 from aderyabin/docpatch

Fix doc in Postgres database creation [ci skip]

Author: senny

activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb

@@ -46,7 +46,7 @@ def recreate_database(name, options = {}) #:nodoc:
         end
 
         # Create a new PostgreSQL database. Options include <tt>:owner</tt>, <tt>:template</tt>,
-        # <tt>:encoding</tt>, <tt>:collation</tt>, <tt>:ctype</tt>,
+        # <tt>:encoding</tt> (defaults to utf8), <tt>:collation</tt>, <tt>:ctype</tt>,
         # <tt>:tablespace</tt>, and <tt>:connection_limit</tt> (note that MySQL uses
         # <tt>:charset</tt> while PostgreSQL uses <tt>:encoding</tt>).
         #