[selectors-4] minor typos

[tshinnic]

Section "2. Selectors Overview", under "E:dir(ltr)", text "an element of type E in with left-to-right directionality", probably should s/in with/with/ ?

Section "5.2. Universal selector ", text "It is written a CSS qualified name with ..." should be s/written a/written as a/ ?

Possible:
Section "3.3. Scoped Selectors", text

Note: If the context does not explicitly define any :scope elements for the selector, the scoping root is a :scope element.

possibly should s/root is a/root is the/ ?