docs: Update intro paragraph to help improve first impressions and broaden audience (#2602)

Co-authored-by: Luffy <[email protected]>

Author: paulhibbitts

README.md

@@ -30,7 +30,7 @@ Docsify turns one or more Markdown files into a Website, with no build process r
 
 ## Features
 
-- No statically built html files
+- No statically built HTML files
 - Simple and lightweight
 - Smart full-text search plugin
 - Multiple themes

docs/README.md

@@ -4,13 +4,11 @@
 
 ## What it is
 
-Docsify generates your documentation website on the fly. Unlike GitBook, it does not generate static html files. Instead, it smartly loads and parses your Markdown files and displays them as a website. To start using it, all you need to do is create an `index.html` and [deploy it on GitHub Pages](deploy.md).
-
-See the [Quick start](quickstart.md) guide for more details.
+Docsify turns your Markdown files into a documentation website instantly. Unlike most other documentation site generator tools, it doesn't need to build HTML files. Instead, it dynamically loads and parses your Markdown files and displays them as a website. To get started, create an `index.html` file and [deploy it on GitHub Pages](deploy.md) (for more details see the [Quick start](quickstart.md) guide).
 
 ## Features
 
-- No statically built html files
+- No statically built HTML files
 - Simple and lightweight
 - Smart full-text search plugin
 - Multiple themes