Spelling fixes

Spelling errors found using github.com/lucasdemarchi/codespell
A tool to fix common misspellings.
This tool is licensed under GNU General Public License, version 2.

Change-Id: Idbabe18a50a2458165617080bf2e828ae5740f2d
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/common/recipes-phosphor/chassis/obmc-op-control-power.bb b/common/recipes-phosphor/chassis/obmc-op-control-power.bb
index fabddf3..c3a1b9d 100644
--- a/common/recipes-phosphor/chassis/obmc-op-control-power.bb
+++ b/common/recipes-phosphor/chassis/obmc-op-control-power.bb
@@ -1,4 +1,4 @@
-SUMMARY = "org.openbmc.control.Power implemention for OpenPOWER"
+SUMMARY = "org.openbmc.control.Power implementation for OpenPOWER"
 DESCRIPTION = "A power control implementation suitable for OpenPOWER systems."
 PR = "r1"