tast: s/crosbolt-prebuild-android/crosbolt-perbuild-android/

It was a typo introduced by http://crrev.com/c/2594614/

BUG=b:175175101
TEST=None

Change-Id: I844be9109bba160c9ba77044fec8809bf67f87d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/2595549
Commit-Queue: Woody Chow <woodychow@google.com>
Tested-by: Woody Chow <woodychow@google.com>
Auto-Submit: Woody Chow <woodychow@google.com>
Reviewed-by: Shuhei Takahashi <nya@chromium.org>
diff --git a/server/site_tests/tast/control.crosbolt-prebuild-android b/server/site_tests/tast/control.crosbolt-perbuild-android
similarity index 100%
rename from server/site_tests/tast/control.crosbolt-prebuild-android
rename to server/site_tests/tast/control.crosbolt-perbuild-android