Author Custom Code Analysis - Re-ordered steps 2.2 and 2.3 for clarity and fixed typos

[emdempster]

@dzsquared - Working through the document, adding the localization class before the resources file gave undefined errors in Visual Studio 2022. Creating the resources file first and then creating the class helps this.

The other large issue is in the SampleConstants class. I believe this code was copied from, https://github.com/microsoft/DACExtensions/blob/master/RuleSamples/AvoidWaitForDelayRule.cs, which uses a different namespace than this project. SQL Server database projects blew up with the 'public.dac..' namespace. Changing it to SampleRules allowed it to work for me.