Fix bug in release script

Author: calebzulawski

.github/workflows/release_prep.sh

@@ -10,7 +10,7 @@ git archive --format=tar --prefix=${PREFIX}/ ${TAG}:bazel | gzip > ${BAZEL_ARCHI
 CMAKE_ARCHIVE="cmake_portable_cc_toolchain-$TAG.tar.gz"
 git archive --format=tar --prefix=${PREFIX}/ ${TAG}:cmake/portable_cc_toolchain | gzip > ${CMAKE_ARCHIVE}
 
-SHA=$(shasum -a 256 $ARCHIVE | awk '{print $1}')
+SHA=$(shasum -a 256 ${BAZEL_ARCHIVE} | awk '{print $1}')
 
 cat << EOF
 ## Bazel
@@ -38,5 +38,5 @@ FetchContent_MakeAvailable(PortableCcToolchain)
 \`\`\`
 
 To enable the toolchain, set `CMAKE_TOOLCHAIN_FILE` to `portable_cc_toolchain/toolchain.cmake`.
-For cross-compiling set `CMAKE_TOOLCHAIN_FILE` to `portable_cc_toolchain/<target>.cmake` (e.g. `aarch64-unknown-linux-gnu.cmake`)
+For cross-compiling, set `CMAKE_TOOLCHAIN_FILE` to `portable_cc_toolchain/<target>.cmake` (e.g. `aarch64-unknown-linux-gnu.cmake`)
 EOF