Updated Using ' pre hook', ' post hook', ' renew hook' and ' reload cmd' (markdown)

Using-'--pre-hook',-'--post-hook',-'--renew-hook'-and-'--reload-cmd'.md

@@ -1,5 +1,7 @@
 Those hooks are only work with `--issue` or `--install-cert` command.
 
 ```sh
-acme.sh --install-cert -d example.com  --pre-hook "echo this is pre hook"  --post-hook "echo this is post hook." 
+acme.sh --install-cert -d example.com  \
+        --pre-hook "echo this is pre hook"  \
+        --post-hook "echo this is post hook."  .......
 ```