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: I78e9d126f19fd9fb2e3f2fa9fe8c2404dc505f82
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/sensorhandler.h b/sensorhandler.h
index ca30fb0..b2392ff 100644
--- a/sensorhandler.h
+++ b/sensorhandler.h
@@ -481,7 +481,7 @@
 /**
  * @brief Map offset to the corresponding bit in the assertion byte.
  *
- * The discrete sensors support upto 14 states. 0-7 offsets are stored in one
+ * The discrete sensors support up to 14 states. 0-7 offsets are stored in one
  * byte and offsets 8-14 in the second byte.
  *
  * @param[in] offset - offset number.