Update change_notes/2025-03-09-rule-8-7.md

Co-authored-by: Copilot <[email protected]>

Author: lcartey

change_notes/2025-03-09-rule-8-7.md

@@ -1,4 +1,4 @@
  - `RULE-8-7` - `ShouldNotBeDefinedWithExternalLinkage.ql`:
-   - Remove false positives where the declation is not defined in the database.
+   - Remove false positives where the declaration is not defined in the database.
    - Remove false positives where the definition and reference are in different translation units.
    - Remove false positives where the reference occurs in a header file.