fix typo

lib/dns/include/dns/rdataset.h

@@ -124,7 +124,7 @@ dns_rdataset_invalidate(dns_rdataset_t *rdataset);
 void
 dns_rdataset_disassociate(dns_rdataset_t *rdataset);
 /*
- * Disassocate 'rdataset' from its rdata, allowing it to be reused.
+ * Disassociate 'rdataset' from its rdata, allowing it to be reused.
  *
  * Notes:
  *	The client must ensure it has no references to rdata in the rdataset

lib/dns/rdataset.c

@@ -71,7 +71,7 @@ void
 dns_rdataset_disassociate(dns_rdataset_t *rdataset) {
 
 	/*
-	 * Disassocate 'rdataset' from its rdata, allowing it to be reused.
+	 * Disassociate 'rdataset' from its rdata, allowing it to be reused.
 	 */
 
 	REQUIRE(DNS_RDATASET_VALID(rdataset));