RulesMissingDocumentation.md needs more update

Author: buyaa-n

src/NetAnalyzers/RulesMissingDocumentation.md

@@ -2,5 +2,3 @@
 
 Rule ID | Missing Help Link | Title |
 --------|-------------------|-------|
-CA1311 | <https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1311> | Specify a culture or use an invariant version |
-CA1421 | <https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1421> | This method uses runtime marshalling even when the 'DisableRuntimeMarshallingAttribute' is applied |