Python: Apply suggestions from code review

Co-authored-by: Taus <tausbn@github.com>

Author: RasmusWL

python/ql/lib/change-notes/2022-08-25-variable-fix.md

@@ -1,4 +1,4 @@
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 category: minorAnalysis
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-* Reads of global/non-local variables (without annotations) inside function defined on classes now works properly in the case where the class had an attribute defined with the same name as the non-local variable.
+* Reads of global/non-local variables (without annotations) inside functions defined on classes now works properly in the case where the class had an attribute defined with the same name as the non-local variable.