updated intro page

Author: Bloxster

src/SUMMARY.md

@@ -1,6 +1,6 @@
 # Erigon 3 docs summary
 
-- [Introduction](welcome.md)
+- [Introduction](_introduction.md)
 
 - [Getting Started](getting_started.md)
     - [Hardware Requirements](getting-started/hw-requirements.md)

src/welcome.md src/_introduction.mdsrc/welcome.md renamed to src/_introduction.md

@@ -50,8 +50,4 @@ Erigon 3 also introduces changes to the release process, including:
 
 # Known Issues
 
-See <https://github.com/erigontech/erigon?tab=readme-ov-file#known-issues>
-
-# Contributing to this documentation
-
-To contribute to this documentation, commit your change to the development branch on [Github](https://github.com/erigontech/docs/tree/development). You might want to run it locally to verify the output before committing, see how MdBook works [here](https://rust-lang.github.io/mdBook/index.html).
+See <https://github.com/erigontech/erigon?tab=readme-ov-file#known-issues>