[obv] lib/gdb.exp: Fix a typo

[Marek Polacek]

s/COMMNAD/COMMAND/.  Commited as obvious.
http://sourceware.org/ml/gdb-cvs/2011-09/msg00163.html

2011-09-29  Marek Polacek  <mpolacek@redhat.com>

	* lib/gdb.exp: Fix a typo in one of the comments.

--- gdb/gdb/testsuite/lib/gdb.exp.mp	2011-09-29 16:27:53.339667129 +0200
+++ gdb/gdb/testsuite/lib/gdb.exp	2011-09-29 16:28:07.030545427 +0200
@@ -3540,7 +3540,7 @@ proc help_test_raw { gdb_command expecte
     gdb_test "${gdb_command}" "${expected_output}" $message
 }

-# Test the output of "help COMMNAD_CLASS". EXPECTED_INITIAL_LINES
+# Test the output of "help COMMAND_CLASS". EXPECTED_INITIAL_LINES
 # are regular expressions that should match the beginning of output,
 # before the list of commands in that class.  The presence of
 # command list and standard epilogue will be tested automatically.

	Marek