diff --git a/docs/en/4in1.md b/docs/en/4in1.md
index 9efbba56..09ace03a 100644
--- a/docs/en/4in1.md
+++ b/docs/en/4in1.md
@@ -6,7 +6,7 @@ Appropriate phase wires and their control signal (Fig. 1b) are marked with the s
For example, orange color -> bottom-right motor -> S1 - orange wire.
-## PixRacer flight controller pin-out
+## Pixracer flight controller pin-out
Fig. 2a shows the pin-out of the terminal strip:
@@ -15,7 +15,7 @@ Fig. 2a shows the pin-out of the terminal strip:
* 1, 2, 3, 4 are ports for connecting ESCs.
* 1, 2 are ports for expanding the output PWM signal (can be setup in QGroundControl, can also can be used to control the hexacopter).
- Fig. 2b shows motor numbering of the PixRacer flight controller.
+ Fig. 2b shows motor numbering of the Pixracer flight controller.
* The arrow is the flight controller orientation.
* Black M3, M4 are the motors that rotate clockwise.
@@ -23,8 +23,8 @@ Fig. 2a shows the pin-out of the terminal strip:
## Picture of the connection, based on the current orientation of the 4 in 1 ESC board
-Using Fig. 1a, 1b, 2a, 2b, map its own control signal to each motor, and connect in accordance with the PixRacer motor numbering order.
+Using Fig. 1a, 1b, 2a, 2b, map its own control signal to each motor, and connect in accordance with the Pixracer motor numbering order.
For example, motor M3 that rotates counter-clockwise (top left corner) is controlled by signal S4 (green wire). It is connected to port 3.
-
\ No newline at end of file
+
diff --git a/docs/en/SUMMARY.md b/docs/en/SUMMARY.md
index bd6d4ecc..e61226f1 100644
--- a/docs/en/SUMMARY.md
+++ b/docs/en/SUMMARY.md
@@ -2,4 +2,9 @@
* [Glossary](gloss.md)
* [Clever 2 assembly](assemble_2.md)
+* [Clever 3 assembly](assemble_3.md)
+* [Connecting 4 in 1 ESCs](4in1.md)
+* [Types of power connectors](connectortypes.md)
+* [Installation of FPV](fpv.md)
+* [Safety instruction](safety.md)
* [UART settings](uart.md)
diff --git a/docs/en/connectortypes.md b/docs/en/connectortypes.md
index d5ac0dcd..2d4f1506 100644
--- a/docs/en/connectortypes.md
+++ b/docs/en/connectortypes.md
@@ -25,4 +25,4 @@ This connector may be used together with a buzzer (beeper) for monitoring batter
There is a great variety of Gold bullet pin connectors. Connectors of this type may have different diameters and size. The most widespread connectors are those with the diameter of 2 mm, 3 mm, and 4 mm.
They are often used for solderless connections on PDB and motors.
-
\ No newline at end of file
+
diff --git a/docs/en/safety.md b/docs/en/safety.md
index ab91bc72..64129fe0 100644
--- a/docs/en/safety.md
+++ b/docs/en/safety.md
@@ -88,4 +88,4 @@ After a scheduled landing, do the following:
1. Disarm (Move the left stick left-down for 3 seconds)
2. Disconnect the Li-ion battery on the copter.
-3. Turn off the remote.
\ No newline at end of file
+3. Turn off the remote.