Update links that go to vercel.com/now (#21556)

contributing.md

@@ -132,7 +132,7 @@ Description
 
 ## Deploy your own
 
-Deploy the example using [Vercel](https://vercel.com/now):
+Deploy the example using [Vercel](https://vercel.com?utm_source=github&utm_medium=readme&utm_campaign=next-example):
 
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/git/external?repository-url=https://github.com/vercel/next.js/tree/canary/examples/DIRECTORY_NAME&project-name=DIRECTORY_NAME&repository-name=DIRECTORY_NAME)
 

examples/with-goober/README.md

@@ -10,7 +10,7 @@ Goober initially started with a slogan as "a less than 1KB css-in-js library at
 
 ## Deploy your own
 
-Deploy the example using [Vercel](https://vercel.com/now):
+Deploy the example using [Vercel](https://vercel.com?utm_source=github&utm_medium=readme&utm_campaign=next-example):
 
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/git/external?repository-url=https://github.com/vercel/next.js/tree/canary/examples/with-goober&project-name=with-goober&repository-name=with-goober)
 

examples/with-hls-js/README.md

@@ -4,7 +4,7 @@ This example shows how to use Next.js along with [HLS.js](https://github.com/vid
 
 ## Deploy your own
 
-Deploy the example using [Vercel](https://vercel.com/now):
+Deploy the example using [Vercel](https://vercel.com?utm_source=github&utm_medium=readme&utm_campaign=next-example):
 
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/git/external?repository-url=https://github.com/vercel/next.js/tree/canary/examples/with-hls-js&project-name=with-hls-js&repository-name=with-hls-js)
 

examples/with-react-md-typescript/README.md

@@ -19,7 +19,7 @@ for a more complex example of using ReactMD + Next.js.
 
 ## Deploy your own
 
-Deploy the example using [Vercel](https://vercel.com/now):
+Deploy the example using [Vercel](https://vercel.com?utm_source=github&utm_medium=readme&utm_campaign=next-example):
 
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/git/external?repository-url=https://github.com/vercel/next.js/tree/canary/examples/with-react-md-typescript&project-name=with-react-md-typescript&repository-name=with-react-md-typescript)
 

examples/with-react-md/README.md

@@ -20,7 +20,7 @@ example for Typescript support.
 
 ## Deploy your own
 
-Deploy the example using [Vercel](https://vercel.com/now):
+Deploy the example using [Vercel](https://vercel.com?utm_source=github&utm_medium=readme&utm_campaign=next-example):
 
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/git/external?repository-url=https://github.com/vercel/next.js/tree/canary/examples/with-react-md&project-name=with-react-md&repository-name=with-react-md)
 

examples/with-service-worker/README.md

@@ -6,7 +6,7 @@ The example is based on the following blog post: [Adding a service worker into y
 
 ## Deploy your own
 
-Deploy the example using [Vercel](https://vercel.com/now):
+Deploy the example using [Vercel](https://vercel.com?utm_source=github&utm_medium=readme&utm_campaign=next-example):
 
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/git/external?repository-url=https://github.com/vercel/next.js/tree/canary/examples/with-service-worker&project-name=with-service-worker&repository-name=with-service-worker)
 

examples/with-urql/README.md

@@ -4,7 +4,7 @@ Use [urql](https://github.com/FormidableLabs/urql) with Next.js using SSG.
 
 ## Deploy your own
 
-Deploy the example using [Vercel](https://vercel.com/now):
+Deploy the example using [Vercel](https://vercel.com?utm_source=github&utm_medium=readme&utm_campaign=next-example):
 
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/git/external?repository-url=https://github.com/vercel/next.js/tree/canary/examples/with-urql&project-name=with-urql&repository-name=with-urql)