update feeds promo number to 6000

Author: Alessandro100

public/site.webmanifest

@@ -1,7 +1,7 @@
 {
   "name": "Mobility Database",
   "short_name": "MobilityDB",
-  "description": "Access GTFS, GTFS Realtime, GBFS transit data with over 4,000 feeds from 70+ countries.",
+  "description": "Access GTFS, GTFS Realtime, GBFS transit data with over 6,000 feeds from 70+ countries.",
   "icons": [
     {
       "src": "/android-chrome-192x192.png",

src/app/[locale]/components/HomePage.tsx

@@ -94,7 +94,7 @@ export default async function HomePage(): Promise<ReactElement> {
             sx={{ fontSize: 30, color: 'primary.main', mx: 1 }}
             itemProp='numberOfItems'
           >
-            4000
+            6000
           </Box>
           {t('feeds')}
           <Box

src/app/[locale]/layout.tsx

@@ -17,7 +17,7 @@ export const metadata = {
   title:
     'MobilityDatabase | The Global Catalog of GTFS, GTFS-Realtime & GBFS Feeds',
   description:
-    "Access GTFS, GTFS Realtime, GBFS transit data with over 4,000 feeds from 70+ countries on the web's leading transit data platform.",
+    "Access GTFS, GTFS Realtime, GBFS transit data with over 6,000 feeds from 70+ countries on the web's leading transit data platform.",
   robots:
     process.env.VERCEL_ENV === 'production'
       ? 'index, follow'

src/app/screens/FAQ.tsx

@@ -17,7 +17,7 @@ export default function FAQ(): React.ReactElement {
           What is the Mobility Database?
         </Typography>
         <Typography className='answer'>
-          The Mobility Database is an open database containing over 4000+
+          The Mobility Database is an open database containing over 6000+
           transit and shared mobility feeds in GTFS, GTFS Realtime, and GBFS
           formats. In addition to our database, we also offer an API, and
           data-quality reports using the Canonical GTFS Validator and the GBFS