Build instructions not up to date in readme.md

[didier-devel]

Documentation Related To Component:

readme.md

Please check those that apply

• typo
• documentation doesn't exist
• documentation needs clarification
• error(s) in example
• needs example

Description Of The Issue

the project readme.md says "npm run build_all" in the Building/testing instructions.
But since this changeset de6f1ef the npm script build_all has been removed and replaced (I suppose by build:package)

[benlesh]

Hi @didier-devel — thank you for taking the time to open this issue and for sharing your thoughtful feedback with the RxJS project. I’m sorry it took us so long to respond. Given how much time has passed and the lack of recent activity, I’m going to close this for now so the tracker reflects the work we’re likely to act on. If this is still relevant on a current RxJS release, please feel welcome to open a new issue with updated context and a reproduction. Thank you again for your contribution and patience.

— Ben