docs: cargo features (#3527)

* dialog

* fs

* geolocation

* haptic

* log

* single instance

* notification

* updater

* ##

* persisted scopes

* stronghold

* sql

* upload

* websocket

* http
(this one was too long that I generated through codex, didn't review yet)

* add change file

* no persisted-scope-js

* add `://`

* Merge branch 'v2' into document-cargo-features

* update system-proxy docs

* finish http docs

* notification doesn't need version bumps

* clean up docs

plugins/single-instance/src/lib.rs

@@ -3,6 +3,11 @@
 // SPDX-License-Identifier: MIT
 
 //! Ensure a single instance of your tauri app is running.
+//!
+//! ## Cargo features
+//!
+//! - **semver**: Allows the app with SemVer incompatible versions to run alongside each other.
+//! - **deep-link**: Trigger [`tauri-plugin-deep-link`](https://crates.io/crates/tauri-plugin-deep-link) event before invoking the single-instance callback.
 
 #![doc(
     html_logo_url = "https://github.com/tauri-apps/tauri/raw/dev/app-icon.png",