remote modify: add timeout config options for http remote

Related: iterative/dvc#8722

Author: dtrifiro

content/docs/command-reference/remote/modify.md

@@ -1146,6 +1146,22 @@ by HDFS. Read more about by expanding the WebHDFS section in
   $ dvc remote modify myremote ssl_verify path/to/ca_bundle.pem
   ```
 
+- `read_timeout` - set the time in seconds till a timeout exception is thrown
+  when attempting to read from a connection (60 by default). Let's set it to 5
+  minutes for example:
+
+  ```cli
+  $ dvc remote modify myremote read_timeout 300
+  ```
+
+- `connect_timeout` - set the time in seconds till a timeout exception is thrown
+  when attempting to make a connection (60 by default). Let's set it to 5
+  minutes for example:
+
+  ```cli
+  $ dvc remote modify myremote connect_timeout 300
+  ```
+
 </details>
 
 <details>