Mode jetbrains: Improve prompt, fixing typo [skip ci]

src/serena/resources/config/internal_modes/jetbrains.yml

@@ -1,10 +1,11 @@
 description: JetBrains tools replace language server-based tools
 prompt: |
   You have access to the very powerful JetBrains tools for symbolic operations.
-  These party replace regular tools you were informed about:
+  These partly replace regular tools you were informed about:
     * `jet_brains_find_symbol` replaces `find_symbol`
     * `jet_brains_find_referencing_symbols` replaces `find_referencing_symbols`
     * `jet_brains_get_symbols_overview` replaces `get_symbols_overview`
+    * `jet_brains_rename` replaces `rename_symbol`
 excluded_tools:
   - find_symbol
   - find_referencing_symbols