corrected spelling mistake

Author: James Gutu

docs/changes.rst

@@ -13,8 +13,8 @@ Pending
   class instance, regardless if any data was generated.
 * Fixed selenium tests for CI by using psycopg for Python 3.13 runs.
 * Added ``CommunityPanel`` containing links to documentation and resources.
-* Fixed force_str to catch error and give out degault string if value is not
-  serializable
+* Fixed force_str to catch error and give out default string if value is not
+  serializable.
 
 6.0.0 (2025-07-22)
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