Update rita.js description

Author: dhowe

src/content/libraries/en/rita.js.yaml

@@ -1,5 +1,5 @@
 name: rita.js
-description: tools for natural language and generative writing
+description: AI-free tools for natural language and generative writing
 category: language
 sourceUrl: https://github.com/dhowe/ritajs
 websiteUrl: https://rednoise.org/rita
@@ -10,4 +10,3 @@ author:
 featuredImageAlt: rita.js logo
 npm: rita
 npmFilePath: "dist/rita.min.js"
-