adjusted wording a little

README

@@ -41,7 +41,7 @@ In this release, the Plackett-Burman constructor has been simplified to
 require only the number of factors: ``pbdesign(n)``. The design is now able 
 to grow as large as necessary to accomodate any number of factors.
 
-Also, the factorial (``ff2n``, ``fracfact``, and ``pbdesign``) designs have 
+Also, the factorial designs (``ff2n``, ``fracfact``, and ``pbdesign``) have 
 all been standardized (except for ``fullfact``, which needs the flexibility) 
 to have coded levels -1 and 1 for the low and high levels.
 
@@ -96,4 +96,4 @@ References
 .. _Plackett-Burman designs: http://en.wikipedia.org/wiki/Plackett-Burman_design
 .. _Latin-Hypercube designs: http://en.wikipedia.org/wiki/Latin_hypercube_sampling
 .. _package homepage: http://pythonhosted.org/pyDOE
-.. _lhs documentation: http://pythonhosted.org/pyDOE/randomized.html#latin-hypercube
+.. _lhs documentation: http://pythonhosted.org/pyDOE/randomized.html#latin-hypercube