Fix a typo in a comment

[skip ci]

Author: fxlb

print-bgp.c

@@ -1682,7 +1682,7 @@ bgp_attr_get_as_size(netdissect_options *ndo,
     /*
      * We can come here, either we did not have enough data, or if we
      * try to decode 4 byte ASs in 2 byte format. Either way, return 4,
-     * so that calller can try to decode each AS as of 4 bytes. If indeed
+     * so that caller can try to decode each AS as of 4 bytes. If indeed
      * there was not enough data, it will crib and end the parse anyways.
      */
     return 4;