fixrule(blockquote_cite_exists): Add cite to messages

[philljenkins]

• New Rule(s): fixrule(blockquote_cite_exists): Add cite to messages
• New or modified help files: fixrule(blockquote_cite_exists): Add cite to help

This PR is related to the following issue(s):

• Update RPT_Blockquote_HasCite rule messages #983

Additional information can be found here:

• blockquote_cite_exists rule.boxnote

Testing reference:

• Open dev version of Checker and scan the test case: Blockquote-hasNoCite.html file to trigger rule to see Messages & Help
• Validate the changes made to rule messages by opening the Action -> Rule listing
• changed rule message will be listed as:

Needs review — Verify that <blockquote> should have a 'cite' attribute and not be used for indentation only
Use <blockquote> only for quotations, not indentation
RuleID: blockquote_cite_exists

I have conducted the following for this PR:

• I validated this code in Chrome and FF
• I validated this fix in my local env and using Action artifacts
• I provided details for testing
• This PR has been reviewed and is ready for test
• I understand that the title of this PR will be used for the next release notes.

[ErickRenteria]

@philljenkins can you please provide test results per pr description:
The automated build tests will validate changes made to rule messages, help, and test cases

[philljenkins]

@ErickRenteria I edited the PR Test Procedure, it now says:

Testing reference:

• Open dev version of Checker and scan the test case: Blockquote-hasNoCite.html file to trigger rule to see Messages & Help
• Validate the changes made to rule messages by opening the Action -> Rule listing
• The changed rule message should be listed as:

RuleID: blockquote_cite_exists Use <blockquote> only for quotations, not indentation
Needs review Verify that <blockquote> should have a 'cite' attribute and not be used for indentation only

[ErickRenteria]

Good to go