Update external_usb_ssd_UAS.md

docs/external_usb_ssd_UAS.md

@@ -6,9 +6,9 @@
 - **Main Controller:** ***ASM1153E***
 - **Support:** UASP Transfer Protocol
 
-#### OPEN Trim for external usb ssd
+## OPEN Trim for external usb ssd
 
-- **1. Check TRIM support**
+#### 1. Check TRIM support**
 
 ```
 sudo fstrim -v /
@@ -26,7 +26,7 @@ sdb           0        0B       0B         0
 
 If the **DISC-MAX** value is **0B**, then TRIM is not **enabled**.
 
-- **2. Enable TRIM**
+#### 2. Enable TRIM
 
 Find the USB **idVendor** and **idProduct** :
 
@@ -45,7 +45,7 @@ ACTION=="add|change", ATTRS{idVendor}=="174c", ATTRS{idProduct}=="1153", SUBSYST
 
 Then reboot, the TRIM will be **enabled**.
 
-- **4.Fstrim the SSD device**
+#### 3.Fstrim the SSD device
 
 1st time, run "**fstrim -v /**" successfull:
 
@@ -62,7 +62,7 @@ sda           0      512B       4G         0
 └─sda2        0      512B       4G         0
 ```
 
-- **5.Automatic trimming**
+#### 4.Automatic trimming
 
 The last thing you will need to do to make sure the TRIM command is run automatically in the background