docs: demo Index for EmbeddedLazyThemeSet

Author: CosmicHorrorDev

README.md

@@ -33,7 +33,7 @@ fn main() {
     let theme_set = two_face::theme::extra();
 
     let syn_ref = syn_set.find_syntax_by_extension("toml").unwrap();
-    let theme = theme_set.get(two_face::theme::EmbeddedThemeName::Nord);
+    let theme = &theme_set[two_face::theme::EmbeddedThemeName::Nord];
     let htmlified = syntect::html::highlighted_html_for_string(
         TOML_TEXT,
         &syn_set,

src/lib.rs

@@ -26,7 +26,7 @@
 //!     let theme_set = two_face::theme::extra();
 //!
 //!     let syn_ref = syn_set.find_syntax_by_extension("toml").unwrap();
-//!     let theme = theme_set.get(two_face::theme::EmbeddedThemeName::Nord);
+//!     let theme = &theme_set[two_face::theme::EmbeddedThemeName::Nord];
 //!     let htmlified = syntect::html::highlighted_html_for_string(
 //!         TOML_TEXT,
 //!         &syn_set,