docs: remove superfluous link

The docker build section points to another page with instructions on how
to clone the repository, but this same page already contains these same
instructions in the previous section.

Author: WhyNotHugo

doc/buildWithDocker.md

@@ -61,7 +61,7 @@ The `infinitime-build` image contains all the dependencies you need.
 The default `CMD` will compile sources found in `/sources`, so you need only mount your code.
 
 This example will build the firmware, generate the MCUBoot image and generate the DFU file.
-For cloning the repo, see [these instructions](../doc/buildAndProgram.md#clone-the-repo). Outputs will be written to **<project_root>/build/output**:
+Outputs will be written to **<project_root>/build/output**:
 
 ```sh
 cd <project_root> # e.g. cd ./work/Pinetime