Fix env var typo in perf profiling docs (#110404)

Fix typo in docs

diff --git a/Doc/howto/perf_profiling.rst b/Doc/howto/perf_profiling.rst
index 61812c19ae6ca9795d8406d6086fd632695ce298..af7b67d20429502f23f8c19223dce4df9da695a6 100644 (file)
--- a/Doc/howto/perf_profiling.rst
+++ b/Doc/howto/perf_profiling.rst
@@ -162,8 +162,7 @@ the :option:`!-X` option takes precedence over the environment variable.
 
 Example, using the environment variable::
 
-   $ PYTHONPERFSUPPORT=1
-   $ python script.py
+   $ PYTHONPERFSUPPORT=1 python script.py
    $ perf report -g -i perf.data
 
 Example, using the :option:`!-X` option::