ci(esp_tinyusb): readme minor changes

device/esp_tinyusb/test_apps/README.md

@@ -14,11 +14,9 @@ The main idea, comes from this reply on [stackoverflow](https://stackoverflow.co
 
 ## UDEV rules
 
-This UDEV rule, will trigger a `docker_tty.sh` script, every time a USB device is connected, or disconnected from a host machine (CI target runner). Also, when a new USB device is enumerated by the host machine.
-
-Location: `/etc/udev/rules.d/99-docker-tty.rules`
-
-`99-docker-tty.rules` file content:
+- This UDEV rule, will trigger a `docker_tty.sh` script, every time a USB device is connected, or disconnected from a host machine (CI target runner). Also, when a new USB device is enumerated by the host machine.
+- Location: `/etc/udev/rules.d/99-docker-tty.rules`
+- `99-docker-tty.rules` file content:
 
 ```
 ACTION=="add", SUBSYSTEM=="tty", RUN+="/usr/local/bin/docker_tty.sh 'added' '%E{DEVNAME}' '%M' '%m'"
@@ -27,11 +25,9 @@ ACTION=="remove", SUBSYSTEM=="tty", RUN+="/usr/local/bin/docker_tty.sh 'removed'
 
 ## Docker tty script
 
-This `.sh` script (triggered by the UDEV rule above) will propagate a USB devices to a running docker container
-
-Location: `/usr/local/bin/docker_tty.sh`
-
-`docker_tty.sh` file content:
+- This `.sh` script (triggered by the UDEV rule above) will propagate a USB devices to a running docker container
+- Location: `/usr/local/bin/docker_tty.sh`
+- `docker_tty.sh` file content:
 
 ```
 #!/usr/bin/env bash
@@ -66,11 +62,9 @@ root@~$ chmod +x /usr/local/bin/docker_tty.sh
 
 ## Logging
 
-The `docker_tty.sh` script logs information about the USB devices, it processes.
-
-Location: `/tmp/docker_tty.log`
-
-An example of log from the `docker_tty.log` file showing a flow of `pytest_usb_device.py` test
+- The `docker_tty.sh` script logs information about the USB devices, it processes.
+- Location: `/tmp/docker_tty.log`
+- An example of log from the `docker_tty.log` file showing a flow of `pytest_usb_device.py` test
 ```
 USB event: added /dev/ttyACM0 166 0
 USB event: added /dev/ttyACM1 166 1
@@ -107,4 +101,7 @@ Run a docker container with following extra options:
 ```
 docker run --device-cgroup-rule='c 188:* rmw' --device-cgroup-rule='c 166:* rmw' --group-add plugdev --privileged ..
 ```
-This way, we allow the docker container to access devices with Major numbers 188 and 166 and with all Minor numbers.
+- `--device-cgroup-rule='c 188:* rmw'`: allow access to `ttyUSBx` (Major 188, all Minor)
+- `--device-cgroup-rule='c 166:* rmw'`: allow access to `ttyACMx` (Major 166, all Minor)
+- `--group-add plugdev`: add plugdev group
+