Clean error message

Author: Hugo Rialan

hooks/dataform_format.sh

@@ -2,7 +2,7 @@
 
 # Check if dataform command is available
 if ! command -v dataform >/dev/null 2>&1; then
-  echo "Error: dataform command not found. Make sure it is installed and available in PATH."
+  echo "Error: dataform command not found. Make sure it is installed. Refer to the official Dataform documentation for installation instructions: https://cloud.google.com/dataform/docs/use-dataform-cli#install_cli"
   exit 1
 fi