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: I649a843483394562fef2e9f1a8b3d38c0cbc6a38
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/meta-openbmc-machines/meta-openpower/meta-ibm/meta-palmetto/conf/local.conf.sample b/meta-openbmc-machines/meta-openpower/meta-ibm/meta-palmetto/conf/local.conf.sample
index 657bdbd..e4b89fe 100644
--- a/meta-openbmc-machines/meta-openpower/meta-ibm/meta-palmetto/conf/local.conf.sample
+++ b/meta-openbmc-machines/meta-openpower/meta-ibm/meta-palmetto/conf/local.conf.sample
@@ -190,7 +190,7 @@
 # shutdown the build. If there is less that 100MB or 1K inodes, perform a hard abort
 # of the build. The reason for this is that running completely out of space can corrupt
 # files and damages the build in ways which may not be easily recoverable.
-# It's necesary to monitor /tmp, if there is no space left the build will fail
+# It's necessary to monitor /tmp, if there is no space left the build will fail
 # with very exotic errors.
 BB_DISKMON_DIRS = "\
     STOPTASKS,${TMPDIR},1G,100K \