Updates docs to redirect to readme

Signed-off-by: simonmicro <simon@simonmicro.de>

docs/firmware/getting_started.md

@@ -38,14 +38,10 @@ Open git bash in your desired folder and clone the source code repository **recu
 
     git clone --recurse-submodules https://github.com/Open-Smartwatch/open-smartwatch-os.git
 
-If you have cloned the repo without the recurse option, run `git submodule update`.
+If you have cloned the repo without the recurse option, run `git submodule update --init`.
 
 !!! note "Tip"
-    After changing or updating/pulling a branch, run the command again to also update dependencies:
-    ```bash
-    git pull
-    git submodule update --init --recursive
-    ```
+    After changing or updating/pulling a branch, run the commands notes inside the `README.md` to update the submodules and the PlatformIO packages.
 
 Then, open the directory with Visual Studio Code.
 
@@ -68,4 +64,4 @@ Generally, you won't need to worry about GPIO assignment and initialisation as t
 
 **Keep in mind the PCB is flipped when inserted into the watch, EN/Reset is at the top left in this case:**
 
-<img src="/assets/uploading.jpg" width="512px"/>
+<img src="/assets/uploading.jpg" width="512px"/>