Update utoipa-config docs

Add warning about build config to utoipa-config

utoipa-config/README.md

@@ -14,6 +14,12 @@ This crate provides global configuration capabilities for `utoipa`.
   * `SchemaCollect:All` will collect all schemas from usages including inlined with `inline(T)`
   * `SchemaCollect::NonInlined` will only collect non inlined schemas from usages.
 
+> [!WARNING]
+> The build config will be stored to projects `OUTPUT` directory. It is then read from there via `OUTPUT` environment
+> variable which will return **any instance** rust compiler might find at that time (Whatever the `OUTPUT` environment variable points to).
+> **Be aware** that sometimes you might face a situation where the config is not aligned with your Rust aliases. 
+> This might need you to change something on your code before changed config might apply.
+
 ## Install
 
 Add dependency declaration to `Cargo.toml`.

utoipa-config/src/lib.rs

@@ -10,6 +10,16 @@
 //!   * [`SchemaCollect::All`] will collect all schemas from usages including inlined with `inline(T)`
 //!   * [`SchemaCollect::NonInlined`] will only collect non inlined schemas from usages.
 //!
+//! <div class="warning">
+//!
+//! <b>Warning!</b><br>
+//! The build config will be stored to projects `OUTPUT` directory. It is then read from there via `OUTPUT` environment
+//! variable which will return **any instance** rust compiler might find at that time (Whatever the `OUTPUT` environment variable points to).
+//! **Be aware** that sometimes you might face a situation where the config is not aligned with your Rust aliases.
+//! This might need you to change something on your code before changed config might apply.
+//!
+//! </div>
+//!
 //! ## Install
 //!
 //! Add dependency declaration to `Cargo.toml`.