aligned readme to use the new env script name + aligned the test work…

…flow

.github/workflows/test.yaml

@@ -17,9 +17,12 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Prepare
+        env:
+          CC:  gcc-11
+          CXX: g++-11
         run: |
           cd test
-          cmake -B build -DCMAKE_CXX_COMPILER=g++-11
+          cmake -B build -DCMAKE_CXX_COMPILER=g++-11 -DCMAKE_C_COMPILER=g++-11
         continue-on-error: false
 
       - name: Build test executable

README.md

@@ -485,7 +485,7 @@ Run the tests:
 
 > **NOTE:** The project uses `clang-format-17`.
 >
-> To install this tool on ubuntu run `sudo bash ./scripts/env/install_clang_format_17.sh`.
+> To install this tool on ubuntu run `sudo bash ./scripts/env/install_clang_17_toolchain.sh`.
 >
 > On windows you can download the LLVM package from the official LLVM [GitHub release page](https://github.com/llvm/llvm-project/releases/tag/llvmorg-17.0.1)
 
@@ -527,6 +527,8 @@ The documentation for this project can be generated using Doxygen:
 
 As of now the project supports the **GNU G++** and **Clang++** compilers with `C++20` support on Linux and Windows.
 
+> **NOTE:** To build the project using clang you will need to install the `clang-17` toolchain using the script or website mentioned in the [Formatting](#formatting) section.
+
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