scripts: fix pyocd runner --flash-opt help

This doesn't work. Fix the example.

Signed-off-by: Marti Bolivar <marti.bolivar@nordicsemi.no>

scripts/west_commands/runners/pyocd.py

@@ -71,7 +71,7 @@ def do_add_parser(cls, parser):
                             help='path to pyocd tool, default is pyocd')
         parser.add_argument('--flash-opt', default=[], action='append',
                             help='''Additional options for pyocd flash,
-                            e.g. \'-e chip\' to chip erase''')
+                            e.g. --flash-opt="-e=chip" to chip erase''')
         parser.add_argument('--frequency',
                             help='SWD clock frequency in Hz')
         parser.add_argument('--gdb-port', default=DEFAULT_PYOCD_GDB_PORT,