Update troubleshooting.md (#933)

## 📜 Description

Remove hardcoded PATH in troubleshooting section.

## 💡 Motivation and Context

Making code more robust is a key for a seamless lib integration in
various projects.

Closes
#931

## 📢 Changelog

<!-- High level overview of important changes -->
<!-- For example: fixed status bar manipulation; added new types
declarations; -->
<!-- If your changes don't affect one of platform/language below - then
remove this platform/language -->

### Docs

- automatically define CMake path;

## 🤔 How Has This Been Tested?

Tested via preview.

## 📸 Screenshots (if appropriate):

<!-- Add screenshots/video if needed -->
<!-- That would be highly appreciated if you can add how it looked
before and after your changes -->

## 📝 Checklist

- [x] CI successfully passed
- [x] I added new mocks and corresponding unit-tests if library API was
changed

Author: talaikis

docs/docs/troubleshooting.md

@@ -99,10 +99,17 @@ If you experience this error on Windows you need to perform next steps:
    - Inside the `android.defaultConfig` block, add the following code:
 
    ```json
+   import org.apache.tools.ant.taskdefs.condition.Os
+   
    externalNativeBuild {
-       cmake {
-           arguments "-DCMAKE_MAKE_PROGRAM=$YOUR_CMAKE_NINJA_PATH$", "-DCMAKE_OBJECT_PATH_MAX=1024"
-       }
+      cmake {
+         def cmakeDir = "${android.sdkDirectory}/cmake/3.31.1/bin"
+         def ninjaExecutable = Os.isFamily(Os.FAMILY_WINDOWS) ? "ninja.exe" : "ninja"
+         def ninjaPath = "${cmakeDir}/${ninjaExecutable}".replace("\\", "/")
+
+         arguments "-DCMAKE_MAKE_PROGRAM=${ninjaPath}",
+                   "-DCMAKE_OBJECT_PATH_MAX=1024"
+      }
    }
    ```