Fix red colors in pre-commit hook

.githooks/pre-commit

@@ -8,7 +8,7 @@ NC='\033[0m' # No Color
 
 # Check that `rustfmt` rules are not violated.
 if ! cargo fmt -- --check; then
-    echo "${RED}Commit error!${NC}"
+    echo -e "${RED}Commit error!${NC}"
     echo "Please format the code via 'cargo fmt', cannot commit unformatted code"
     exit 1
 fi
@@ -17,7 +17,7 @@ VERFIER_CONTRACT_FILE="contracts/contracts/Verifier.sol"
 
 # Check if diff for contract contains setting the `DUMMY_VERIFIER` to the true.
 if git diff --cached $VERFIER_CONTRACT_FILE | grep -lq 'constant DUMMY_VERIFIER = true'; then
-    echo "${RED}Commit error!${NC}"
+    echo -e "${RED}Commit error!${NC}"
     echo "It seems that line 'constant DUMMY_VERIFIER = true' in 'Verifier.sol' is staged to be committed"
     echo "Cannot commit the code with enabled DUMMY_VERIFIER"
     echo "Please disable the DUMMY_VERIFIER and try to commit changes again"