fix typo: add space (GH-18853)

Fix typo in cmdline.rst
Add space between the `-m` option and the module name (`timeit`).

diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index 2206e5065be1fde1d90b0b1e0ba350d99865d474..9b30c288211edc89a78fcfafc8992176a422079c 100644 (file)
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -109,8 +109,8 @@ source.
    Many standard library modules contain code that is invoked on their execution
    as a script.  An example is the :mod:`timeit` module::
 
-       python -mtimeit -s 'setup here' 'benchmarked code here'
-       python -mtimeit -h # for details
+       python -m timeit -s 'setup here' 'benchmarked code here'
+       python -m timeit -h # for details
 
    .. audit-event:: cpython.run_module module-name cmdoption-m