patch 8.1.2055: not easy to jump to function line from profile

Problem:    Not easy to jump to function line from profile.
Solution:   Use "file:99" instead of "file line 99" so that "gf" works.
            (Daniel Hahler, closes #4951)

src/profiler.c

@@ -696,7 +696,7 @@ func_dump_profile(FILE *fd)
 				     get_scriptname(fp->uf_script_ctx.sc_sid));
 		    if (p != NULL)
 		    {
-			fprintf(fd, "    Defined: %s line %ld\n",
+			fprintf(fd, "    Defined: %s:%ld\n",
 					   p, (long)fp->uf_script_ctx.sc_lnum);
 			vim_free(p);
 		    }