Fixed grammar error in readme.md.

Author: hexydec

readme.md

@@ -11,7 +11,7 @@ A tokeniser based HTML document parser and minifier, written in PHP.
 
 An HTML parser, primarily designed for minifying HTML documents, it also enables the document structure to be queried allowing attribute and textnode values to be extracted.
 
-Both parsers are designed around a tokeniser to make the document processing more reliable than regex based minifiers, which are a bit blunt and can be problematic if they match patterns in the wrong places.
+The parser is designed around a tokeniser to make the document processing more reliable than regex based minifiers, which are a bit blunt and can be problematic if they match patterns in the wrong places.
 
 The software is also capable of processing and minifying SVG documents.