Typo (#25)

Author: rougier

README.md

@@ -4,7 +4,7 @@ Copyright (c) 2017 Nicolas P. Rougier
 (https://creativecommons.org/licenses/by-nc-sa/4.0/).  
 **Website**: http://www.labri.fr/perso/nrougier/from-python-to-numpy
 
-There is already a fair number of books about Numpy
+There are already a fair number of books about Numpy
 (see [bibliography](10-bibliography.rst)) and a legitimate question is to
 wonder if another book is really necessary. As you may have guessed by reading
 these lines, my personal answer is yes, mostly because I think there is room

book.html

@@ -35,7 +35,7 @@ <h2 class="subtitle" id="copyright-c-2017-nicolas-p-rougier-nicolas-rougier-inri
 <img alt="data/cubes.png" src="data/cubes.png" style="width: 100%;" />
 </div>
 <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
-<p>There is already a fair number of books about Numpy (see <a class="reference internal" href="#bibliography">Bibliography</a>) and a
+<p>There are already a fair number of books about Numpy (see <a class="reference internal" href="#bibliography">Bibliography</a>) and a
 legitimate question is to wonder if another book is really necessary. As you
 may have guessed by reading these lines, my personal answer is yes, mostly
 because I think there is room for a different approach concentrating on the

book.rst

@@ -39,7 +39,7 @@
 
 .. ----------------------------------------------------------------------------
 
-There is already a fair number of books about Numpy (see Bibliography_) and a
+There are already a fair number of books about Numpy (see Bibliography_) and a
 legitimate question is to wonder if another book is really necessary. As you
 may have guessed by reading these lines, my personal answer is yes, mostly
 because I think there is room for a different approach concentrating on the