minor edit

README.rst

@@ -34,7 +34,7 @@ Overview and Use of RGI
 =======================
 
 * `Help Menu and Usage </docs/rgi_help.rst>`_
-* `RGI Reference Databases </docs/rgi_load.rst>`_
+* `Loading CARD Reference Databases </docs/rgi_load.rst>`_
 * `Analyzing Genomes, Genome Assemblies, Metagenomic Contigs, or Proteomes </docs/rgi_main.rst>`_ (a.k.a. RGI main)
 * `Analyzing Metagenomic Reads </docs/rgi_bwt.rst>`_ (a.k.a. RGI bwt)
 * `K-mer Prediction of Pathogen-of-Origin for AMR Genes </docs/rgi_kmer.rst>`_ (beta-testing)