Add more info about disabling SonarCloud alerting

Author: mpenning

README.md

@@ -238,7 +238,11 @@ Bug Tracker and Support
 Unit-Tests and Development
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-We are manually disabling some [SonarCloud](https://sonarcloud.io/) alerts with `#pragma warning disable S1313`, where `S1313` is a False-positive that [SonarCloud](https://sonarcloud.io) flags in [CiscoConfParse](https://github.com/mpenning/ciscoconfparse/)
+- We are manually disabling some [SonarCloud](https://sonarcloud.io/) alerts with:
+  - `#pragma warning disable S1313`
+  - `#pragma warning restore S1313`
+  - Where `S1313` is a False-positive that [SonarCloud](https://sonarcloud.io) flags in [CiscoConfParse](https://github.com/mpenning/ciscoconfparse/).
+  - Those `#pragma warning` lines should be carefully-fenced to ensure that we don't disable a [SonarCloud](https://sonarcloud.io/) alert that is useful.
 
 The project\'s [test workflow][1] checks ciscoconfparse on Python versions 3.7 and higher, as well as a [pypy JIT][22] executable.