DYN-8444 Added 2 missing .md files

[dariaivanciucova]

Added 2 missing .md files for TSplines documentation

TSplineSurface.BySphereBestFit.md
TSplineTopology.InnerVertices.md

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

Release Notes

Added two missing help files to the documentation
TSplineSurface.BySphereBestFit.md
TSplineTopology.InnerVertices.md

Reviewers

@Amoursol
@reddyashish

FYIs

@dnenov
@ivaylo-matov

[zeusongit]

Can you take a look at the conflicts? @dariaivanciucova

[github-actions]

See the ticket for this pull request: https://jira.autodesk.com/browse/DYN-8444

[zeusongit]

Reverting this change, since it seems to fail 5 tests:
NodeDocumentationMarkdownGeneratorTests.MarkdownGeneratorCommandTests.CanOverWriteExistingFiles
NodeDocumentationMarkdownGeneratorTests.MarkdownGeneratorCommandTests.CanScanAssemblyFromPath
NodeDocumentationMarkdownGeneratorTests.MarkdownGeneratorCommandTests.DictionaryContentIsFoundCorrectlyForCoreNodes
NodeDocumentationMarkdownGeneratorTests.MarkdownGeneratorCommandTests.ProducesCorrectOutputFromCoreDirectory_preloadedbinaries
NodeDocumentationMarkdownGeneratorTests.MarkdownGeneratorCommandTests.ProducesCorrectOutputFromDirectory
@dariaivanciucova Can you take a look?