added prerequisites requirement for pages subject to change (#250)

* added prerequisites requirement for pages subject to change

* nit: title

* Update contributing.md

---------

Co-authored-by: rahul <[email protected]>
Co-authored-by: Mário Havel <[email protected]>

Author: 3 people

docs/contributing.md

@@ -101,6 +101,37 @@ For other important links, add a section on the bottom of the page with list of
 
 [JSON-RPC API reference](https://ethereum.org/en/developers/docs/apis/json-rpc), [archived](https://web.archive.org/web/20240117035335/https://ethereum.org/en/developers/docs/apis/json-rpc)
 
+### In-page notices
+
+We use blockquote notices at the top of the page to provide readers with appropriate context regarding the content of the page. 
+
+#### Active research
+
+Wiki pages that are subject to future updates, i.e. pages covering active research topics require a notice to be added on top of the pages:
+
+```
+* Warning message artifact using the following format:
+> [!WARNING]
+> This document covers an active area of research, may be outdated at time of reading and subject to future updates, as the design space around evolves.
+```
+
+#### Roadmap tracker
+
+To help user navigate across research topics, we are using a roadmap tracker with the following format:
+ ``` 
+| Upgrade |    URGE     |   Track   |               Topic               |                                     Cross-references                                      |
+|:-------:|:-----------:|:---------:|:---------------------------------:|:-----------------------------------------------------------------------------------------:|
+|  ePBS   | the Scourge | MEV track | Endgame block production pipeline | intersection with: [ET](/wiki/research/ET.md), [PEPC](), [IL]() |
+```
+Ideally, references point to a local wiki pages.
+
+#### Incomplete pages
+
+Pages with minimal content which need more work to cover the topic need to include a notice: 
+
+```
+> :warning: This article is a [stub](https://en.wikipedia.org/wiki/Wikipedia:Stub), help the wiki by [contributing](/contributing.md) and expanding it.
+```
 
 ## Anything else?