[PATCH 3 of 5] tests: fix typo of shebang prefix in test-check-pyflakes.t

[Yuya Nishihara]

# HG changeset patch
# User Yuya Nishihara <yuya at tcha.org>
# Date 1463276461 -32400
#      Sun May 15 10:41:01 2016 +0900
# Node ID bd8c3400d9df2fab424891882c525de7a94b70a5
# Parent  bc52f617e40dc27529a19be0e44c30873616e4c6
tests: fix typo of shebang prefix in test-check-pyflakes.t

diff --git a/tests/test-check-pyflakes.t b/tests/test-check-pyflakes.t
--- a/tests/test-check-pyflakes.t
+++ b/tests/test-check-pyflakes.t
@@ -5,7 +5,7 @@
 run pyflakes on all tracked files ending in .py or without a file ending
 (skipping binary file random-seed)
 
-  $ hg locate 'set:**.py or grep("^!#.*python")' 2>/dev/null \
+  $ hg locate 'set:**.py or grep("^#!.*python")' 2>/dev/null \
   > | xargs pyflakes 2>/dev/null | "$TESTDIR/filterpyflakes.py"
   tests/filterpyflakes.py:61: undefined name 'undefinedname'