Update pages/toolkits/databases/postgres.mdx

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: evantahler

pages/toolkits/databases/postgres.mdx

@@ -24,7 +24,7 @@ This toolkit is meant to be an example of how to build a toolkit for a database,
 
 ## Key Features
 
-This toolkit demonstrates several important concepts for LLM-powered database interactions :
+This toolkit demonstrates several important concepts for LLM-powered database interactions:
 
 * **Schema Discovery**: Automatically discover available database schemas
 * **Table Exploration**: Find all tables within a specific schema