Fix description punctuation in working-interest-groups.mdx (modelcontextprotocol#1523)

Author: olaservo

docs/community/working-interest-groups.mdx

@@ -1,6 +1,6 @@
 ---
 title: Working and Interest Groups
-description: Learn about the two forms of collaborative groups within the Model Context Protocol's governance structure: Working Groups and Interest Groups.
+description: Learn about the two forms of collaborative groups within the Model Context Protocol's governance structure - Working Groups and Interest Groups.
 ---
 
 Within the MCP contributor community we maintain two types of collaboration formats - **Interest** and **Working** groups.