Fixed a function name in MismatchedNumbers.sksl

DSLParser caught a duplicate function name in here that SkSLParser
wasn't reporting.

Change-Id: I428c7ec64d1b625d9d12c6b7acdb23b52a0d7b89
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/443241
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
1 file changed