Tweak C2190 and C2191 error reference

[Rageking8]

• Augment remarks with what happens without /Za flag
• Tweak and format examples
  • Rename func to func1 for alignment
  • Tighten wording in comments
  • Remove superfluous spaces and add newline
• Add each other as "See also" link since they are analogs
• Update ms.date metadata