Tweak description

README.md

 * [ElasticSearch PHP](https://github.com/elasticsearch/elasticsearch-php) - The official client library for [ElasticSearch](http://www.elasticsearch.org/).
 * [Elastica](https://github.com/ruflin/Elastica) - A client library for ElasticSearch.
 * [Solarium](http://www.solarium-project.org/) - A client library for [Solr](http://lucene.apache.org/solr/).
-* [SphinxQL query builder](http://foolcode.github.io/SphinxQL-Query-Builder/) - a library to build queries for [Sphinx search](http://sphinxsearch.com/) engine.
+* [SphinxQL query builder](http://foolcode.github.io/SphinxQL-Query-Builder/) - A query library for the [Sphinx](http://sphinxsearch.com/) search engine.
 
 ## Command Line
 *Libraries for building command line utilities.*