Fix typo in geopm_pio.7.rst
Fix typo in geopm_pio.7.rst

Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>
geopm/geopm,geopm/geopm,geopm/geopm,geopm/geopm,geopm/geopm