fix: repited tag section in README

ERROR:
Sorry, your push was rejected during YAML metadata verification:
remote: - Error: Invalid YAML in README.md: duplicated mapping key (13:1)
remote:
remote: 10 | tags:
remote: 11 | - mcp-server-track
remote: 12 | short_description: tdb
remote: 13 | tags:
remote: ------^
remote: 14 | - mcp-server-track
remote: help: You can use a tool like http://www.yamllint.com/ to check it

README.md

@@ -11,8 +11,6 @@ license: apache-2.0
 tags:
  - mcp-server-track
 short_description: tdb
-tags:
-- mcp-server-track
 ---
 
 # TDA Agent Tools