Update docs

scripts/checks/coverage.sh

@@ -5,6 +5,8 @@ set -euo pipefail
 export COVERAGE=true
 export FOUNDRY_FUZZ_RUNS=10
 
+. scripts/set-max-old-space-size.sh
+
 # Hardhat coverage
 hardhat coverage
 
@@ -12,7 +14,11 @@ if [ "${CI:-"false"}" == "true" ]; then
   # Foundry coverage
   forge coverage --report lcov --ir-minimum
   # Remove zero hits
-  sed -i '/,0/d' lcov.info
+  if [[ "$OSTYPE" == "darwin"* ]]; then
+    sed -i '' '/,0/d' lcov.info
+  else
+    sed -i '/,0/d' lcov.info
+  fi
 fi
 
 # Reports are then uploaded to Codecov automatically by workflow, and merged.