Rollup merge of rust-lang#148680 - ShE3py:array-colon, r=JonathanBrouwer

Recover `[T: N]` as `[T; N]`

`;` is similar and (keyboard-wise) next to `:`, so a verbose suggestion may help to see the difference.

Parent PR: rust-lang#143905

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`@rustbot` label +A-parser +A-array +A-diagnostics +A-suggestion-diagnostics +D-papercut

Author: Zalathar