[x/tour] tour: use better wording to explain run/format keyboard shortcuts
[x/tour] tour: use better wording to explain run/format keyboard shortcuts

Fixes golang/tour#526

Change-Id: I2338cf6d06dd8756dcb81a88453558c5b2de2257
Reviewed-on: https://go-review.googlesource.com/122097
Reviewed-by: Daniel Martí <29bf28b42a938ace12a5819da4ed4ba03d82f315@mvdan.cc>
X-Tour-Commit: 48b81741b67f44ae17412be74b7be2cecd25f933

golang/website,golang/website,golang/website,golang/website,golang/website,golang/website,golang/website