diff --git a/docs/en/module/proto.md b/docs/en/module/proto.md
index 9638ccb6..7f1e9c7b 100644
--- a/docs/en/module/proto.md
+++ b/docs/en/module/proto.md
@@ -2,7 +2,6 @@
 
 <img src="assets/img/product_pics/module/module_proto_01.png" width="30%" height="30%"> <img src="assets/img/product_pics/module/module_proto_02.png" width="30%" height="30%">
 
-
 ## Description
 
 **PROTO** is a pure universal prototype perboard. You can have the total freedom to make your own project as you want it, with prototyping perboards that allows laying out customized circuit to interact with the M5 core via M-BUS.
diff --git a/docs/en/module/proto_kit.md b/docs/en/module/proto_kit.md
index a0e5cf35..d3ce319d 100644
--- a/docs/en/module/proto_kit.md
+++ b/docs/en/module/proto_kit.md
@@ -2,8 +2,6 @@
 
 <img src="assets/img/product_pics/module/proto_kit/module_proto_kit_01.jpg" width="30%" height="30%"> <img src="assets/img/product_pics/module/proto_kit/module_proto_kit_02.jpg" width="30%" height="30%">
 
-
-
 ## Description
 
 In comparision,**PROTO function Module** includes more stuff than PROTO Board.Other than the PROTO board, it also comes with a DHT12(temperature and humility sensor), M-BUS Socket and more.
diff --git a/docs/en/module/servo.md b/docs/en/module/servo.md
index d86c99a3..62d8751c 100644
--- a/docs/en/module/servo.md
+++ b/docs/en/module/servo.md
@@ -2,8 +2,6 @@
 
 <img src="assets\img\product_pics\module\servo\servo_01.jpg" width="30%"><img src="assets\img\product_pics\module\servo\servo_02.jpg" width="30%"><img src="assets\img\product_pics\module\servo\servo_03.jpg" width="30%">
 
-
-
 ## Description
 
 **SERVO** is made to implement the bestest, easiest way to drive Servo motors. This M5 module will make quick work of your next Servo project!  It is able to drive mutiple Servo motors, up to 12 channels(Max load :14W) . We also added an DC input for power supplement. Through M-BUS the DC in can automatically power the M5 core at top.
@@ -19,13 +17,11 @@ Servo is powered by MEGA328 communicate via IIC(0x53).
 -  Product Size：54.2mm x 54.2mm x 12.8mm
 -  Product weight：24.5g
 
-
 ## Include
 
 -  1x M5Stack Servo Module
 -  1x Common Male to XT30 Male DC convertor
 
-
 ## Applications
 
 -  Humanoid robot
diff --git a/docs/en/unit/pbhub.md b/docs/en/unit/pbhub.md
index 88b40836..52996763 100644
--- a/docs/en/unit/pbhub.md
+++ b/docs/en/unit/pbhub.md
@@ -21,8 +21,6 @@ See the below picture for timing sequence of HX711:
 <br>
 <img src="assets/img/product_pics/unit/pbhub/unit_pbhub_notice_01.jpg" width="60%" height="60%">
 
-
-
 ## Product Features
 
 - Single-Bus GROVE PORTB Expander
@@ -31,7 +29,6 @@ See the below picture for timing sequence of HX711:
 - Product Size：48.2mm x 24.2mm x 11mm
 - Product weight：6.8g
 
-
 ### Kit includes
 - 1x PbHUB Unit
 - 1x Grove Cable
diff --git a/docs/en/unit/unit_fan.md b/docs/en/unit/unit_fan.md
index e0142708..af638a36 100644
--- a/docs/en/unit/unit_fan.md
+++ b/docs/en/unit/unit_fan.md
@@ -32,7 +32,6 @@ This N20 motor is has a 5V supply voltage. The output shaft has a rotational spe
 
 - Electric Fan
 
-
 ## Dcumentation
 
   
diff --git a/docs/en/unit/unitv.md b/docs/en/unit/unitv.md
index 65cd976e..8d179954 100644
--- a/docs/en/unit/unitv.md
+++ b/docs/en/unit/unitv.md
@@ -207,7 +207,7 @@ UNIT-V does not currently recognize all types of MicroSD cards. We have tested s
 -  **Web page** - [sipeed](https://maixpy.sipeed.com/en/)
 -  **datasheet** - [K210](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/core/kendryte_datasheet_en.pdf)
 
-### Example
+## Example
 
 *If you want the complete code, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/App/UnitV/track_ball)*