Update translation keys and clean scripts

This commit updates translation keys across multiple components, changing the connector from dot to colon. Additionally, the clean scripts in the README.md have been corrected to `pnpm run clean:workspaces` and `pnpm run clean` from their previous erroneous state.

apps/web/app/(marketing)/(legal)/cookie-policy/page.tsx

@@ -6,7 +6,7 @@ export async function generateMetadata() {
   const { t } = await createI18nServerInstance();
 
   return {
-    title: t('marketing.cookiePolicy'),
+    title: t('marketing:cookiePolicy'),
   };
 }
 
@@ -17,7 +17,7 @@ async function CookiePolicyPage() {
     <div>
       <div className={'container mx-auto'}>
         <SitePageHeader
-          title={t(`marketing.cookiePolicy`)}
+          title={t(`marketing:cookiePolicy`)}
           subtitle={`This is the cookie policy page. It's a great place to put information about the cookies your site uses.`}
         />
       </div>