Update readme.md

readme.md

@@ -16,7 +16,7 @@ Create HTML page with the header using `flexbox` basing on [this mockup](https:/
 - pay attention the mock is adaptive. Develop the layout to fit on 1024px and 1200px the same as on the mock.
 - reset browser default margins
 - use images from [src/images](src/images)
-- Use semantic tags: `<header>`, `<nav>`, `ul`
+- use semantic tags: `<header>`, `<nav>`, `ul`
 - change links styles on `:hover`
 - follow styles from the mock
 - the link with `blue` color and line below is an active link. It should have `class="is-active"` and relevant styles.