fix(pf6): Update README.md (#275)

Author: fhlavac

README.md

@@ -129,7 +129,7 @@ When adding/making changes to a component, always make sure your code is tested:
 - add unit tests to a `[ComponentName].test.tsx` file to your component's directory
 - make sure all the core functionality is covered using Cypress component or E2E tests
 - add component tests to `cypress/component/[ComponentName].cy.tsx` file and E2E tests to `cypress/e2e/[ComponentName].spec.cy.ts`
-- add `ouiaId` to component props definition with a default value of the component name (for subcomponents, let's use `ComponentName-element-specification` naming convention e.g. `ouiaId="WarningModal-confirm-button"`)
+- add `ouiaId` to the component props definition with a default value of the component name (for subcomponents, let's use `ComponentName-element-specification` naming convention e.g. `ouiaId="WarningModal-confirm-button"`)
 
 ### Styling:
 - for styling always use JSS