Typo fixes

[martincostello]

• Fix various typos in code found by Visual Studio.
• Fix link to documentation broken by [Docs] Split readme md #3405.

[Copilot]

Pull Request Overview

This PR fixes various typos in the codebase and corrects a broken documentation link.

• Fixed an incorrect lambda parameter naming (e.g. "schemaRespository" to "schemaRepository") and inconsistent lambda parameter names.
• Updated the documentation link to point to the correct URL.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/Swashbuckle.AspNetCore.SwaggerGen/SwaggerGenerator/SwaggerGenerator.cs	Corrected typos and standardized variable names in lambda expressions; updated the documentation link.
exclusion.dic	Added a new exclusion term ("unprocessable") to the list.

Comments suppressed due to low confidence (1)

src/Swashbuckle.AspNetCore.SwaggerGen/SwaggerGenerator/SwaggerGenerator.cs:128

• [nitpick] Consider using a more descriptive parameter name in lambda expressions instead of the single-letter 'p' to enhance code readability.

throw new UnknownSwaggerDocument(documentName, _options.SwaggerDocs.Select((p) => p.Key));

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.55%. Comparing base (c04e798) to head (5511401).
Report is 2 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3433   +/-   ##
=======================================
  Coverage   93.55%   93.55%           
=======================================
  Files         110      110           
  Lines        3834     3834           
  Branches      719      719           
=======================================
  Hits         3587     3587           
  Misses        247      247           

Flag	Coverage Δ
Linux	93.55% <100.00%> (ø)
Windows	93.55% <100.00%> (ø)
macOS	93.55% <100.00%> (ø)

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