Various issues I found while revising docs

Tilde misuse in subgraphs > querying > best practices? <img width="1042" height="241" alt="Image" src="https://github.com/user-attachments/assets/ffb2f495-dad1-4fd1-9f79-20a38145e56f" /> Found in graph > client > introduction: missing link? <img width="824" height="68" alt="Image" src="https://github.com/user-attachments/assets/70dab6a2-e75a-4055-8b09-64bf22801960" /> Not sure what is off about this sentence: <img width="1035" height="138" alt="Image" src="https://github.com/user-attachments/assets/2cc72b09-0a62-4c48-b01e-c35ae99efce2" /> Tilde problems: <img width="876" height="294" alt="Image" src="https://github.com/user-attachments/assets/043c7dde-c8de-48d4-8f5e-b03208552c5e" /> Found in graph > client > architecture: 'Everything apps need' or 'everything your app needs'? <img width="863" height="368" alt="Image" src="https://github.com/user-attachments/assets/b2bbd0ed-4869-4067-beae-029c3beb83c2" /> change 'then' to 'that' or is a word missing -- I wasn't sure: <img width="1037" height="178" alt="Image" src="https://github.com/user-attachments/assets/838bab33-8b78-4e19-b37c-0efb0fa08b7b" /> allow you to connect? <img width="1037" height="219" alt="Image" src="https://github.com/user-attachments/assets/5dbf6219-9be4-40f3-a304-2401c81bd17b" />