optimize README.md

Author: loongs-zhang

.github/actions-rs/grcov.yml

@@ -0,0 +1,2 @@
+output-type: lcov
+output-file: ./lcov.info

.github/workflows/coverage.yml

@@ -28,8 +28,8 @@ jobs:
         run: cargo test --release --all-features --all --verbose
         env:
           CARGO_INCREMENTAL: '0'
-          RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Cllvm-args=--inline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=unwind -Zpanic_unwind_tests'
-          RUSTDOCFLAGS: '-Zprofile -Ccodegen-units=1 -Cllvm-args=--inline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=unwind -Zpanic_unwind_tests'
+          RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Cllvm-args=--inline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=unwind -Zpanic_abort_tests'
+          RUSTDOCFLAGS: '-Zprofile -Ccodegen-units=1 -Cllvm-args=--inline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=unwind -Zpanic_abort_tests'
       - name: rust-grcov
         # You may pin to the exact commit or the version.
         # uses: actions-rs/grcov@bb47b1ed7883a1502fa6875d562727ace2511248