bufio: Fix typo in scan.go documentation
Apologies for the the nitpicky PR. I believe there is a minor typo in the documentation of `MaxScanTokenSize`, which confused me for a moment when I went to search for the referenced method, `Scan.Buffer`. Thanks!
Change-Id: I5d21e77276285206497fe75291001032c255cace
GitHub-Last-Rev:
635e35c0191c11f2b6966b5e58cf91a1064099da
GitHub-Pull-Request: golang/go#32193
Reviewed-on: https://go-review.googlesource.com/c/go/+/178637
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>