sqlite: update to 3.30.1

lib/docs/scrapers/sqlite.rb

@@ -2,7 +2,7 @@ module Docs
   class Sqlite < FileScraper
     self.name = 'SQLite'
     self.type = 'sqlite'
-    self.release = '3.25.2'
+    self.release = '3.30.1'
     self.base_url = 'https://sqlite.org/'
     self.root_path = 'docs.html'
     self.initial_paths = %w(keyword_index.html)
@@ -37,6 +37,7 @@ module Docs
       requirements.html
       session/intro.html
       syntax.html
+      src/doc/trunk/doc/lemon.html
     )
 
     options[:attribution] = 'SQLite is in the Public Domain.'