Pallet Name Customisation (#4806)

Added Instructions for pallet name customisation in the ReadMe

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Bastian Köcher <git@kchr.de>

templates/minimal/README.md

@@ -37,6 +37,21 @@ A Polkadot SDK based project such as this one consists of:
 * 🛠️ Depending on your operating system and Rust version, there might be additional
 packages required to compile this template - please take note of the Rust compiler output.
 
+## Customization
+
+In case you would like to change the pallet's name from  `pallet-minimal-template` to `pallet-test`, 
+you would need to implement the following changes:
+* Change the pallet folder name from `template` to `test` for consistency
+* Also for consistency, in `/runtime/src/lib.rs`, change from `pub type Template` to `pub type Test`, 
+and don't forget to also customize the corresponding comments.
+* Change  `pallet-minimal-template` to `pallet-test` in the following files:
+    * `/runtime/Cargo.toml`
+    * `/runtime/src/lib.rs`
+    * `/pallets/test/Cargo.toml`
+    * `/src/lib.rs`
+* Change `pallet_minimal_template` to `pallet_test` in the following files:
+    * `/runtime/src/lib.rs`
+  
 ### Build
 
 🔨 Use the following command to build the node without launching it: