Fix broken docs build due to non-ASCII character
Fix broken docs build due to non-ASCII character

Seen in GCB:

```
Step #2:   Conversion error: Jekyll::Converters::Scss encountered an error while converting 'css/main.scss':
Step #2:                     Invalid US-ASCII character "\xC2" on line 68
Step #2: jekyll 3.8.7 | Error:  Invalid US-ASCII character "\xC2" on line 68
```

This should fix it.

Closes #12187.

PiperOrigin-RevId: 335005755

katre/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,davidzchen/bazel,twitter-forks/bazel,bazelbuild/bazel,twitter-forks/bazel,davidzchen/bazel,cushon/bazel,cushon/bazel,perezd/bazel,davidzchen/bazel,meteorcloudy/bazel,katre/bazel,bazelbuild/bazel,perezd/bazel,meteorcloudy/bazel,bazelbuild/bazel,safarmer/bazel,twitter-forks/bazel,perezd/bazel,cushon/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,perezd/bazel,meteorcloudy/bazel,meteorcloudy/bazel,meteorcloudy/bazel,davidzchen/bazel,davidzchen/bazel,perezd/bazel,cushon/bazel,twitter-forks/bazel,perezd/bazel,davidzchen/bazel,katre/bazel,katre/bazel,safarmer/bazel,ButterflyNetwork/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,perezd/bazel,safarmer/bazel,bazelbuild/bazel,katre/bazel,ButterflyNetwork/bazel,bazelbuild/bazel,cushon/bazel,safarmer/bazel,bazelbuild/bazel,meteorcloudy/bazel,cushon/bazel,safarmer/bazel,katre/bazel,davidzchen/bazel,safarmer/bazel