cmd/go/testdata/script: fix typos in test comments

Change-Id: I2a55cda76f1074b997349dfd6e001dc7277faade
Reviewed-on: https://go-review.googlesource.com/134655Reviewed-by: Daniel Martí <mvdan@mvdan.cc>

src/cmd/go/testdata/script/list_bad_import.txt

@@ -47,7 +47,7 @@ stdout error
 stdout incomplete
 
 
-# The pattern "all" should match only packages that acutally exist,
+# The pattern "all" should match only packages that actually exist,
 # ignoring those whose existence is merely implied by imports.
 go list -e -f '{{.ImportPath}}' all
 stdout example.com/direct

src/cmd/go/testdata/script/mod_list_bad_import.txt

@@ -47,7 +47,7 @@ stdout error
 stdout incomplete
 
 
-# The pattern "all" should match only packages that acutally exist,
+# The pattern "all" should match only packages that actually exist,
 # ignoring those whose existence is merely implied by imports.
 go list -e -f '{{.ImportPath}} {{.Error}}' all
 stdout example.com/direct