Fix docs build

.github/workflows/rust.yaml

@@ -51,3 +51,15 @@ jobs:
         run: >-
           cargo --locked clippy --workspace --no-default-features
           --features "${{ matrix.backend }}" -- -D warnings
+
+  doc_build:
+    runs-on: ubuntu-latest
+    env:
+      RUSTDOCFLAGS: -D warnings
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: stable
+      - name: Check documentation build
+        run: cargo --locked doc --workspace

firmware-controller/Cargo.toml

@@ -9,7 +9,7 @@ authors = [
 ]
 license = "MIT"
 repository = "https://github.com/layerx-world/firmware-controller/"
-readme = "../README.md"
+readme = "README.md"
 
 [features]
 default = ["embassy"]

firmware-controller/README.md

@@ -0,0 +1 @@
+../README.md

firmware-controller/src/lib.rs

@@ -1,4 +1,4 @@
-#![doc = include_str!("../../README.md")]
+#![doc = include_str!("../README.md")]
 
 #[cfg(not(any(feature = "embassy", feature = "tokio")))]
 compile_error!("Either the `embassy` or `tokio` feature must be enabled");