perf build-id: Fix spelling mistake "Cant" -> "Can't"

There is a spelling mistake in a pr_err message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-janitors@vger.kernel.org
Link: https://lore.kernel.org/r/20220316232452.53062-1-colin.i.king@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Author: ColinIanKing

tools/perf/util/build-id.c

@@ -762,7 +762,7 @@ build_id_cache__add(const char *sbuild_id, const char *name, const char *realnam
 
 		len = readlink(linkname, path, sizeof(path) - 1);
 		if (len <= 0) {
-			pr_err("Cant read link: %s\n", linkname);
+			pr_err("Can't read link: %s\n", linkname);
 			goto out_free;
 		}
 		path[len] = '\0';