instruction using linters

wiki/using_linters.md

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+## Instructions for setting up the linters
+
+### Cpp linter
+- First, you need to install the latest version of clang separately using ```sudo apt install clang-format```
+- You can format the entire project immediately, but it is recommended to format files in which changes have been made using ```clang-format -i name_file.cpp```
+    - -i — edits the in-place file (without this flag, the output will be to the console)
+    - --style=Google — you can specify the style (by default, it searches for .clang-format in the project)
+- Checking if the code is formatted ```clang-format name_file.cpp | diff -u name_file.cpp -```
+    - If the output is empty, the code has already been formatted.
+    - If there are differences, the code requires formatting.
+- You can create a configuration **.clang-format** using ```clang-format -style=Google -dump-config > .clang-format```. But this is not recommended because it already exists in the root of the project and it can be changed to suit your needs.
+
+### Go linter
+- Formatting the file ```gofmt -w file_name.go ``` (`-w' = write) or formatting the entire directory ```gofmt -w .```. It is not recommended to format the entire project at once.
+- Checking if the code is formatted:
+    - List of unformatted files ```gofmt -l .```
+    - Show differences (diff) ```gofmt -d file_name.go```