Spelling fixes

Change-Id: I953614024660287b94d835e30b117cc4023e749b
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/util.hpp b/util.hpp
index ff91d17..7e48383 100644
--- a/util.hpp
+++ b/util.hpp
@@ -104,7 +104,7 @@
  */
 bool isValidPrefix(int addressFamily, uint8_t prefixLength);
 
-/* @brief gets the network section of the ip adress.
+/* @brief gets the network section of the ip address.
  * @param[in] addressFamily - IP address family(AF_INET/AF_INET6).
  * @param[in] ipaddress - IP address.
  * @param[in] prefix - prefix length.