Update README.md

included codeblock for downloading and extracting the build
(struggled a bit because I was new to the DSM shell, tried with unzip, faild to install it with apt/dnf, etc. so I thought i might help out other newbies)

README.md

@@ -52,6 +52,12 @@ ### Download the script
 2. Save the download zip file to a folder on the Synology.
     - Do ***NOT*** save the script to a M.2 volume. After a DSM or Storage Manager update the M.2 volume won't be available until after the script has run.
 3. Unzip the zip file.
+```
+cd /usr/local
+sudo wget https://github.com/007revad/Synology_HDD_db/archive/refs/heads/main.zip -O syno_hdd_db.zip
+sudo 7z x syno_hdd_db.zip -o/usr/local/Synology_HDD_db
+cd Synology_HDD_db && ls -ali
+```
 
 ### Required files