Update readme after architecture change

[Tbaut]

This part slipped my mind before merging #239

[asnaith]

I nuked my local instance and started from scratch but I ran into this issue with npm run codegen :

➜  squid git:(tbaut-update-readme) npm run codegen;

> [email protected] codegen
> npx squid-typeorm-codegen

npm ERR! code E404
npm ERR! 404 Not Found - GET https://registry.npmjs.org/squid-typeorm-codegen - Not found
npm ERR! 404
npm ERR! 404  'squid-typeorm-codegen@*' is not in this registry.
npm ERR! 404
npm ERR! 404 Note that you can also install from a
npm ERR! 404 tarball, folder, http url, or git url.

npm ERR! A complete log of this run can be found in: /Users/asnaith/.npm/_logs/2023-07-11T21_51_33_837Z-debug-0.log

[Tbaut]

@asnaith oh I forgot probably the most important part, the npm run install to install dependancies. Should be better now :)

[asnaith]

@asnaith oh I forgot probably the most important part, the npm run install to install dependancies. Should be better now :)

...and I don't know how that didn't immediately occur to me either 😄

I had to make a small change but it's good to go now.

[Tbaut]

Thanks!