Fix org settings help and info text (#1402)

Resolves https://github.com/webrecorder/browsertrix-cloud/issues/1400

### Changes

- Adds `/orgs` to "Custom URL Identifier" help text
- Fixes color mismatch between info text

frontend/src/pages/org/settings.ts

@@ -213,7 +213,7 @@ export class OrgSettings extends LiteElement {
               help-text=${msg(
                 str`Org home page: ${window.location.protocol}//${
                   window.location.hostname
-                }/${
+                }/orgs/${
                   this.slugValue ? this.slugify(this.slugValue) : this.org.slug
                 }`
               )}
@@ -249,7 +249,7 @@ export class OrgSettings extends LiteElement {
             <div class="text-base">
               <sl-icon name="info-circle"></sl-icon>
             </div>
-            <div class="mt-0.5 text-xs text-neutral-400">
+            <div class="mt-0.5 text-xs text-neutral-500">
               ${msg(
                 "Use this ID to reference this org in the Browsertrix API."
               )}