chore: basic linting

README.md

@@ -27,22 +27,27 @@ The application calculates totals and allows you to print or save the quotation
 ## Running Tests
 
 Ensure you have Node.js installed, then run:
-```
+
+```shell
 node tests/test.js
 ```
 
 ## Linting
 
 Install the linting tools:
-```
+
+```shell
 npm install
 ```
 
 To run all linters (HTMLHint, Stylelint, ESLint):
-```
+
+```shell
 npm run lint
 ```
+
 Or individually:
+
 - `npm run lint:html`
 - `npm run lint:css`
 - `npm run lint:js`
@@ -51,10 +56,13 @@ Or individually:
 
 Husky is configured to run tests, linters, and lint-staged automatically on each commit.
 After installing dependencies, run:
-```
+
+```shell
 npm run prepare
 ```
+
 Now, any `git commit` will:
+
 - run `npm test`
 - run `npm run lint`
 - run `lint-staged` to fix staged files