Fixed typo

regex/compile.go

@@ -1157,7 +1157,7 @@ func Compile(re string, flags ...ReFlag) (Reg, error) {
 	return reg, nil
 }
 
-// MustCompile panicks if Compile returns an error. They are identical in all other respects.
+// MustCompile panics if Compile returns an error. They are identical in all other respects.
 func MustCompile(re string, flags ...ReFlag) Reg {
 	reg, err := Compile(re, flags...)
 	if err != nil {