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/systemd-policy/phosphor-systemd-policy/service-restart-policy.conf b/common/recipes-phosphor/systemd-policy/phosphor-systemd-policy/service-restart-policy.conf
index 0bd049b..54516c2 100644
--- a/common/recipes-phosphor/systemd-policy/phosphor-systemd-policy/service-restart-policy.conf
+++ b/common/recipes-phosphor/systemd-policy/phosphor-systemd-policy/service-restart-policy.conf
@@ -21,7 +21,7 @@
 # failure which means the default of 10s for this results in the service
 # being restarted indefinitely. Change this to 30s to only allow a service
 # to be restarted StartLimitBurst times within a 30s interval before
-# being put in a permenant fail state.
+# being put in a permanent fail state.
 #
 # See systemd-system.conf(5) for details on the conf files