fix: update link to documentation about API keys (#7373)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/components/settings/APIKeys.vue

@@ -58,7 +58,9 @@
         </div>
 
         <div class="text-center mt-3" style="font-size: 13px">
-            <a href="https://github.com/louislam/uptime-kuma/wiki/API-Keys" target="_blank">{{ $t("Learn More") }}</a>
+            <a href="https://github.com/louislam/uptime-kuma/wiki/Prometheus-API-Keys" target="_blank">
+                {{ $t("Learn More") }}
+            </a>
         </div>
 
         <Confirm ref="confirmPause" :yes-text="$t('Yes')" :no-text="$t('No')" @yes="disableKey">