docs: add README.md for build_helper

weihanglo · Jun 5, 2024 · 8a0f195 · 8a0f195
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diff --git a/src/tools/build_helper/README.md b/src/tools/build_helper/README.md
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+Types and functions shared across tools in this workspace.
diff --git a/src/tools/build_helper/src/lib.rs b/src/tools/build_helper/src/lib.rs
@@ -1,3 +1,5 @@
+//! Types and functions shared across tools in this workspace.
+
 pub mod ci;
 pub mod git;
 pub mod metrics;