Updating readmes (#7950)

README for all templates still points to polkadot.network.
update them to:

1. point to [docs.polkadot.com](http://docs.polkadot.com/)
2. point to official polkadot discord and @substratedevs in TG for
support

Author: seemantaggarwal

README.md

@@ -12,7 +12,7 @@ forks](https://img.shields.io/github/forks/paritytech/polkadot-sdk)
 [![StackExchange](https://img.shields.io/badge/StackExchange-Community%20&%20Support-222222?logo=stackexchange)](https://substrate.stackexchange.com/)  ![GitHub contributors](https://img.shields.io/github/contributors/paritytech/polkadot-sdk)  ![GitHub commit activity](https://img.shields.io/github/commit-activity/m/paritytech/polkadot-sdk)  ![GitHub last commit](https://img.shields.io/github/last-commit/paritytech/polkadot-sdk)
 
 > The Polkadot SDK repository provides all the components needed to start building on the
-> [Polkadot](https://polkadot.network) network, a multi-chain blockchain platform that enables
+> [Polkadot](https://polkadot.com/) network, a multi-chain blockchain platform that enables
 > different blockchains to interoperate and share information in a secure and scalable way.
 
 </div>

docker/dockerfiles/polkadot/polkadot_Dockerfile.README.md

@@ -1,6 +1,6 @@
 # Polkadot official Docker image
 
-## [Polkadot](https://polkadot.network/)
+## [Polkadot](https://polkadot.com/)
 
 ## [GitHub](https://github.com/paritytech/polkadot)
 

docs/contributor/DOCUMENTATION_GUIDELINES.md

@@ -291,7 +291,7 @@ Optionally, in order to demonstrate the relation between the two, you can start
 //! > Made with *Substrate*, for *Polkadot*.
 //!
 //! [![github]](https://github.com/paritytech/polkadot-sdk/tree/master/substrate/frame/fast-unstake) -
-//! [![polkadot]](https://polkadot.network)
+//! [![polkadot]](https://polkadot.com)
 //!
 //! [polkadot]: https://img.shields.io/badge/polkadot-E6007A?style=for-the-badge&logo=polkadot&logoColor=white
 //! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github

polkadot/README.md

@@ -1,6 +1,6 @@
 # Polkadot
 
-Implementation of a <https://polkadot.network> node in Rust based on the Substrate framework.
+Implementation of a <https://polkadot.com> node in Rust based on the Substrate framework.
 
 The README provides information about installing the `polkadot` binary and developing on the codebase. For more specific
 guides, like how to run a validator node, see the [Polkadot Wiki](https://wiki.polkadot.network/docs/getting-started).

templates/minimal/README.md

@@ -213,10 +213,12 @@ Previously minimal template's development chains:
 
 ## Getting Help
 
-- 🧑‍🏫 To learn about Polkadot in general, [Polkadot.network](https://polkadot.network/) website is a good starting point.
+- 🧑‍🏫 To learn about Polkadot in general, [docs.Polkadot.com](https://docs.polkadot.com/) website is a good starting point.
 
 - 🧑‍🔧 For technical introduction, [here](https://github.com/paritytech/polkadot-sdk#-documentation) are
 the Polkadot SDK documentation resources.
 
 - 👥 Additionally, there are [GitHub issues](https://github.com/paritytech/polkadot-sdk/issues) and
 [Substrate StackExchange](https://substrate.stackexchange.com/).
+- 👥You can also reach out on the [Official Polkdot discord server](https://polkadot-discord.w3f.tools/)
+- 🧑Reach out on [Telegram](https://t.me/substratedevs) for more questions and discussions

templates/parachain/README.docify.md

@@ -252,10 +252,12 @@ relay chain network (see [Parachain Template node](#parachain-template-node) set
 
 ## Getting Help
 
-- 🧑‍🏫 To learn about Polkadot in general, [Polkadot.network](https://polkadot.network/) website is a good starting point.
+- 🧑‍🏫 To learn about Polkadot in general, [docs.Polkadot.com](https://docs.polkadot.com/) website is a good starting point.
 
 - 🧑‍🔧 For technical introduction, [here](https://github.com/paritytech/polkadot-sdk#-documentation) are
   the Polkadot SDK documentation resources.
 
 - 👥 Additionally, there are [GitHub issues](https://github.com/paritytech/polkadot-sdk/issues) and
   [Substrate StackExchange](https://substrate.stackexchange.com/).
+- 👥You can also reach out on the [Official Polkdot discord server](https://polkadot-discord.w3f.tools/)
+- 🧑Reach out on [Telegram](https://t.me/substratedevs) for more questions and discussions

templates/parachain/README.md

@@ -254,10 +254,12 @@ relay chain network (see [Parachain Template node](#parachain-template-node) set
 
 ## Getting Help
 
-- 🧑‍🏫 To learn about Polkadot in general, [Polkadot.network](https://polkadot.network/) website is a good starting point.
+- 🧑‍🏫 To learn about Polkadot in general, [docs.Polkadot.com](https://docs.polkadot.com/) website is a good starting point.
 
 - 🧑‍🔧 For technical introduction, [here](https://github.com/paritytech/polkadot-sdk#-documentation) are
   the Polkadot SDK documentation resources.
 
 - 👥 Additionally, there are [GitHub issues](https://github.com/paritytech/polkadot-sdk/issues) and
   [Substrate StackExchange](https://substrate.stackexchange.com/).
+- 👥You can also reach out on the [Official Polkdot discord server](https://polkadot-discord.w3f.tools/)
+- 🧑Reach out on [Telegram](https://t.me/substratedevs) for more questions and discussions