typo in deploy key name

[tGrothmannFluffy]

I was a bit worried when I saw a deploy key that said created by fastalne instead of fastlane:

fastlane-plugin-github_action/lib/fastlane/plugin/github_action/actions/github_action_action.rb

Line 22 in 5cfdcb3

"Match Deploy Key (created by fastalne-plugin-github_actions)"

[blwinters]

I fixed this typo in this PR. There's another typo with a fix that's been waiting in the PRs for a while. Not that it's urgent, but any reason not to merge these @joshdholtz?