Change regcomp.syn and run make regen

Author: pjcj

regcomp.sym

@@ -239,7 +239,7 @@ REFFL       REF,        num 2 V   ; Match already matched string, using /li rule
 # N?REFF[AU] could have been implemented using the FLAGS field of the
 # regnode, but by having a separate node type, we can use the existing switch
 # statement to avoid some tests
-REFFU       REF,        num 2 V   ; Match already matched string, usng /ui.
+REFFU       REF,        num 2 V   ; Match already matched string, using /ui.
 REFFA       REF,        num 2 V   ; Match already matched string, using /aai rules.
 
 #*Named references.  Code in regcomp.c assumes that these all are after

regnodes.h

@@ -912,7 +912,7 @@ typedef struct regnode                           tregnode_WHILEM;
 #define REFFL_t8_p8                       303  /*      0x12f */
 
 #define REFFU                        76        /* 0x4c Match already matched
-                                                  string, usng /ui. */
+                                                  string, using /ui. */
 #define REFFU_tb                       152     /*      0x098 */
 #define REFFU_t8                       153     /*      0x099 */
 #define REFFU_tb_pb                       304  /*      0x130 */