Documentation browser error message fix

[dnenov]

Purpose

This PR fixes an issue with the Documentation Browser specifically when displaying a Warning without an "href" tag. Previously, when creating the Warning message part of the help body, we would assume that an "href" tag is present in the second line of the info message. This is not always the case, and as a result any warning message of more than 1 line would be clipped to display only the first line.

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

• a small fix around a limitation in how warnings were read
• now captures the case where a warning does not have an href tag to it
• will now display the full multiline text of a warning that does not have an href tag

Reviewers

@Amoursol

FYIs

@reddyashish

[Amoursol]

@reddyashish a small PR from Deyan adding multi-line support to Error Messages in the Extended Node Help.