tests: glob match has a glob character for not getting a warning on windows

When / matches on / on windows, and there is no other glob character, this
results in a warning. Avoid this by using an other glob character.

tests/test-run-tests.t

@@ -1,121 +1,121 b''
 Simple commands:
 
   $ echo foo
   foo
   $ printf 'oh no'
   oh no (no-eol)
   $ printf 'bar\nbaz\n' | cat
   bar
   baz
 
 Multi-line command:
 
   $ foo() {
   >     echo bar
   > }
   $ foo
   bar
 
 Return codes before inline python:
 
   $ sh -c 'exit 1'
   [1]
 
 Doctest commands:
 
   >>> print 'foo'
   foo
   $ echo interleaved
   interleaved
   >>> for c in 'xyz':
   ...     print c
   x
   y
   z
   >>> print
   
 
 Regular expressions:
 
   $ echo foobarbaz
   foobar.* (re)
   $ echo barbazquux
   .*quux.* (re)
 
 Globs:
 
   $ printf '* \\foobarbaz {10}\n'
   \* \\fo?bar* {10} (glob)
 
 Literal match ending in " (re)":
 
   $ echo 'foo (re)'
   foo (re)
 
 Windows: \r\n is handled like \n and can be escaped:
 
 #if windows
   $ printf 'crlf\r\ncr\r\tcrlf\r\ncrlf\r\n'
   crlf
   cr\r (no-eol) (esc)
   \tcrlf (esc)
   crlf\r (esc)
 #endif
 
 Combining esc with other markups - and handling lines ending with \r instead of \n:
 
   $ printf 'foo/bar\r'
-  foo/bar\r (no-eol) (glob) (esc)
+  fo?/bar\r (no-eol) (glob) (esc)
 #if windows
   $ printf 'foo\\bar\r'
   foo/bar\r (no-eol) (glob) (esc)
 #endif
   $ printf 'foo/bar\rfoo/bar\r'
   foo.bar\r \(no-eol\) (re) (esc)
   foo.bar\r \(no-eol\) (re)
 
 testing hghave
 
   $ "$TESTDIR/hghave" true
   $ "$TESTDIR/hghave" false
   skipped: missing feature: nail clipper
   [1]
   $ "$TESTDIR/hghave" no-true
   skipped: system supports yak shaving
   [1]
   $ "$TESTDIR/hghave" no-false
 
 Conditional sections based on hghave:
 
 #if true
   $ echo tested
   tested
 #else
   $ echo skipped
 #endif
 
 #if false
   $ echo skipped
 #else
   $ echo tested
   tested
 #endif
 
 #if no-false
   $ echo tested
   tested
 #else
   $ echo skipped
 #endif
 
 #if no-true
   $ echo skipped
 #else
   $ echo tested
   tested
 #endif
 
 Exit code:
 
   $ (exit 1)
   [1]