coverage: Update log module names in debug docs

Author: Zalathar

compiler/rustc_mir_transform/src/coverage/debug.rs

@@ -44,15 +44,15 @@
 //! points, which can be enabled via environment variable:
 //!
 //! ```shell
-//! RUSTC_LOG=rustc_mir_transform::transform::coverage=debug
+//! RUSTC_LOG=rustc_mir_transform::coverage=debug
 //! ```
 //!
 //! Other module paths with coverage-related debug logs may also be of interest, particularly for
 //! debugging the coverage map data, injected as global variables in the LLVM IR (during rustc's
 //! code generation pass). For example:
 //!
 //! ```shell
-//! RUSTC_LOG=rustc_mir_transform::transform::coverage,rustc_codegen_ssa::coverageinfo,rustc_codegen_llvm::coverageinfo=debug
+//! RUSTC_LOG=rustc_mir_transform::coverage,rustc_codegen_llvm::coverageinfo=debug
 //! ```
 //!
 //! Coverage Debug Options