Update README.md

Author: KyleAMathews

packages/gatsby-transformer-javascript-frontmatter/README.md

@@ -15,7 +15,7 @@ plugins: [`gatsby-transformer-javascript-frontmatter`];
 
 ## Parsing algorithm
 
-The algorithm for uses babylon and traverse (from the babel family of code) to
+This plugin uses babylon and traverse (from the babel family of code) to
 statically read the frontmatter exports.
 
 In a .js file, export a frontmatter object to set your metadata variables, like so: