infra/skqp/docker/README.md: whitespace changes for readability

No-Try: true
Change-Id: I34410ebbb924bbcad12e776fc725401482158b77
Reviewed-on: https://skia-review.googlesource.com/c/165308
Auto-Submit: Hal Canary <halcanary@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
1 file changed