Codespell 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: I2cf277da6cc16322eff8adaba83e1ea98dd4cb41
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/redfish/update_service/test_firmware_property.robot b/redfish/update_service/test_firmware_property.robot
index 753465e..8012a53 100644
--- a/redfish/update_service/test_firmware_property.robot
+++ b/redfish/update_service/test_firmware_property.robot
@@ -28,7 +28,7 @@
 
     Redfish.Patch  ${REDFISH_BASE_URI}UpdateService  body={'ApplyTime' : 'Immediate'}
 
-    # TODO: Move to redfish when avialable.
+    # TODO: Move to redfish when available.
     ${apply_time}=  Read Attribute   ${SOFTWARE_VERSION_URI}apply_time  RequestedApplyTime
     Rprint Vars  apply_time
     Should Be Equal   ${apply_time}  xyz.openbmc_project.Software.ApplyTime.RequestedApplyTimes.Immediate
@@ -50,7 +50,7 @@
 
     Redfish.Patch  ${REDFISH_BASE_URI}UpdateService  body={'ApplyTime' : 'OnReset'}
 
-    # TODO: Move to redfish when avialable.
+    # TODO: Move to redfish when available.
     ${apply_time}=  Read Attribute   ${SOFTWARE_VERSION_URI}apply_time  RequestedApplyTime
     Rprint Vars  apply_time
     Should Be Equal   ${apply_time}  xyz.openbmc_project.Software.ApplyTime.RequestedApplyTimes.OnReset