Configuration schema generator: fix missing cref inside para tag

[bart-vmware]

Description

Configuration schema generator: fix missing cref inside para tag.
Fixes #1356 (comment).

Example output from GetDocComment(ISymbol):

<member name="P:Steeltoe.Management.Endpoint.Actuators.HttpExchanges.HttpExchangesEndpointOptions.RequestHeaders">
  <summary>
            Gets request header values that are allowed to be logged.
            <para>
            If a request header is not present in the <see cref="P:Steeltoe.Management.Endpoint.Actuators.HttpExchanges.HttpExchangesEndpointOptions.RequestHeaders" />, the header name will be logged with a redacted value. Request headers can
            contain authentication tokens, or private information which may have regulatory concerns under GDPR and other laws. Arbitrary request headers should
            not be logged unless logs are secure and access controlled and the privacy impact assessed.
            </para>
  </summary>
</member>

Quality checklist

• Your code complies with our Coding Style.
• You've updated unit and/or integration tests for your change, where applicable.
• You've updated documentation for your change, where applicable.
  If your change affects other repositories, such as Documentation, Samples and/or MainSite, add linked PRs here.
• There's an open issue for the PR that you are making. If you'd like to propose a new feature or change, please open an issue to discuss the change or find an existing issue.
• You've added required license files and/or file headers (explaining where the code came from with proper attribution), where code is copied from StackOverflow, a blog, or OSS.

[bart-vmware]

/azp run Steeltoe.All

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[bart-vmware]

/cc @eerhardt

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud