sanity: Fix typos

(cherry picked from commit c5ff6d9638b1033d2536ed46a7d254c016d8b103)

src/modules/sanity/sanity.c

@@ -578,7 +578,7 @@ int check_cseq_value(sip_msg_t* msg) {
 	return SANITY_CHECK_PASSED;
 }
 
-/* compare the Content-Length value with the accutal body length */
+/* compare the Content-Length value with the actual body length */
 int check_cl(sip_msg_t* msg) {
 	char *body;
 

src/modules/sanity/sanity.h

@@ -48,7 +48,7 @@ int check_via_protocol(struct sip_msg* _msg);
 /* check if the SIP version in the Via header is 2.0 */
 int check_via_sip_version(struct sip_msg* _msg);
 
-/* compare the Content-Length value with the accutal body length */
+/* compare the Content-Length value with the actual body length */
 int check_cl(struct sip_msg* _msg);
 
 /* compare the method in the CSeq header with the request line value */