x86/bugs: Remove apostrophe typo

Remove a superfluous ' in the mitigation string.

Fixes: e8ec1b6e ("x86/bugs: Enable STIBP for JMP2RET")
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>

arch/x86/kernel/cpu/bugs.c

@@ -1181,7 +1181,7 @@ spectre_v2_user_select_mitigation(void)
 	if (retbleed_mitigation == RETBLEED_MITIGATION_UNRET) {
 		if (mode != SPECTRE_V2_USER_STRICT &&
 		    mode != SPECTRE_V2_USER_STRICT_PREFERRED)
-			pr_info("Selecting STIBP always-on mode to complement retbleed mitigation'\n");
+			pr_info("Selecting STIBP always-on mode to complement retbleed mitigation\n");
 		mode = SPECTRE_V2_USER_STRICT_PREFERRED;
 	}