domain_conf.c:fix a typo

Signed-off-by: NNitesh Konkar <nitkon12@linux.vnet.ibm.com>

src/conf/domain_conf.c

@@ -25447,7 +25447,7 @@ virDomainDiskDefCheckDuplicateInfo(const virDomainDiskDef *a,
     }
 
     /* Duplicate WWN/serial isn't usually problematic for the OS and
-     * forbiding it would possibly inhibit using multipath configurations */
+     * forbidding it would possibly inhibit using multipath configurations */
 
     return 0;
 }