fix(android): use a non relative path for toolchain configuration

Installation/src/AndroidInstall.rst

@@ -141,7 +141,7 @@ In this case, you give all the necessary variables on the command-line in one sh
 .. code:: bash
 
     $ cd ~/Dev/Deps/Build/Debug
-    $ cmake ../Src/fw4spl-deps -DCMAKE_INSTALL_PREFIX=~/Dev/Deps/Install/Debug -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=../Src/fw4spl-deps/cmake/android/android-arm-api23-clang-ndk.cmake
+    $ cmake ../Src/fw4spl-deps -DCMAKE_INSTALL_PREFIX=~/Dev/Deps/Install/Debug -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=~/Dev/Deps/Src/fw4spl-deps/cmake/android/android-arm-api23-clang-ndk.cmake
 
 2. NCurses based editor
 +++++++++++++++++++++++++
@@ -160,7 +160,7 @@ Then change the following CMake variables:
 
 Press *"c"* to configure. Now you have got two new variables to set:
 
-- ``CMAKE_TOOLCHAIN_FILE``: set to ../Src/fw4spl-deps/cmake/android/android-arm-api23-clang-ndk.cmake
+- ``CMAKE_TOOLCHAIN_FILE``: set to ~/Dev/Deps/Src/fw4spl-deps/cmake/android/android-arm-api23-clang-ndk.cmake
 
 Press *"c"* to configure and then *"g"* to generate the makefiles.
 
@@ -181,7 +181,7 @@ Like ccmake, change the following CMake variables:
 
 Press *"c"* to configure. Now you have got two new variables to set:
 
-- ``CMAKE_TOOLCHAIN_FILE``: set to ../Src/fw4spl-deps/cmake/android/android-arm-api23-clang-ndk.cmake
+- ``CMAKE_TOOLCHAIN_FILE``: set to ~/Dev/Deps/Src/fw4spl-deps/cmake/android/android-arm-api23-clang-ndk.cmake
 
 Click on "configure" then "generate".
 
@@ -221,7 +221,7 @@ Click on "configure" then "generate".
 
 Press *"c"* to configure. Now you have got two new variables to set:
 
-- ``CMAKE_TOOLCHAIN_FILE``: set to PATH/TO/fw4spl-deps/cmake/android/android-arm-api23-clang-ndk.cmake
+- ``CMAKE_TOOLCHAIN_FILE``: set to ~/Dev/Deps/Src/fw4spl-deps/cmake/android/android-arm-api23-clang-ndk.cmake
 
 .. note::
     - If ``PROJECT_TO_BUILD`` is empty, all application will be compiled