update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/application-dev/reference/apis/js-apis-system-bluetooth.md

@@ -25,6 +25,7 @@ Scans for Bluetooth Low Energy (BLE) devices nearby. This operation consumes sys
 **System capability**: SystemCapability.Communication.Bluetooth.Lite
 
 **Parameters**
+
 **Table 1** StartBLEScanOptions
 
 | Name| Type| Mandatory| Description|
@@ -60,6 +61,7 @@ Stops scanning for BLE devices nearby. This API is used with [bluetooth.startBLE
 **System capability**: SystemCapability.Communication.Bluetooth.Lite
 
 **Parameters**
+
 **Table 2** StopBLEScanOptions
 
 | Name| Type| Mandatory| Description|
@@ -94,6 +96,7 @@ Subscribes to the newly detected BLE device. If this API is called multiple time
 **System capability**: SystemCapability.Communication.Bluetooth.Lite
 
 **Parameters**
+
 **Table 3** SubscribeBLEFoundOptions
 
 | Name| Type| Mandatory| Description|