Fix error message formatting and wording

Author: TylerMSFT

docs/error-messages/tool-errors/vectorizer-and-parallelizer-messages.md

@@ -36,8 +36,8 @@ The 5*xx* reason codes apply to both the parallelizer and the vectorizer.
 | 503 | Loop includes exception-handling or switch statements. |
 | 504 | Loop body may throw an exception that requires destruction of a C++ object. |
 | 505 | Outer loop has a pre-incremented induction variable. Exiting analysis. |
-| 506 | Loop structural / canonical form failure. |
-| 507 | Bounds / initialization / termination / compare consistency failure. |
+| 506 | Loop structural or canonical form failure. |
+| 507 | Bounds, initialization, termination, or compare consistency failure. |
 | 508 | Stride derivation or usage failure |
 | 509 | Loop direction acceptability failure. |