PR template: update selfcompile instruction

.github/PULL_REQUEST_TEMPLATE

@@ -2,7 +2,7 @@
 
 <!--
 
-Please title your PR as follows: `time: fix foo bar`. 
+Please title your PR as follows: `time: fix foo bar`.
 Always start with the thing you are fixing, then describe the fix.
 Don't use past tense (e.g. "fixed foo bar").
 
@@ -27,8 +27,8 @@ Before submitting a PR, please:
   A) run the tests with `v test-compiler` .
   B) make sure, that V can still compile itself:
 ```shell
-./v -o v v.v
-./v -o v v.v
+./v -o v cmd/v
+./v -o v cmd/v
 ```
 
 I try to process PRs as soon as possible. They should be handled within 24 hours.
@@ -37,4 +37,4 @@ Applying labels to PRs is not needed.
 
 Thanks a lot for your contribution!
 
-->
+-->