fix typo

.github/workflows/test-yjit.yaml

@@ -18,7 +18,7 @@ jobs:
           # NOTE: `--yjit-stats=quiet` is only present in 3.3+.
           #   We've had `--yjit-stats` since 3.0, but
           #   1) it dumps stat info to stdout, and
-          #   2) non of our <3.3 tests require the additional stats
+          #   2) none of our <3.3 tests require the additional stats
           - ruby: '3.2'
             rubyopt: '--yjit --yjit-stats=quiet'
     name: Test YJIT (${{ matrix.os }}, ${{ matrix.ruby }} ${{ matrix.rubyopt }})