pyafm/overview.tex: Fix 'a software' -> 'software' typo

diff --git a/src/pyafm/overview.tex b/src/pyafm/overview.tex
index 9a49d5aecef88f0c6dadf0fb2d18b38664902d2a..6d3f4acc0771d92a269ed6db7ba78df0117d61f9 100644 (file)
--- a/src/pyafm/overview.tex
+++ b/src/pyafm/overview.tex
@@ -12,9 +12,9 @@ to add this capabilities.
 
 For those of you thinking, ``Why is he calling this thing a stack?'',
 software is rarely developed as a single monolithic program.  Instead,
-developers write a software as a series of modular components, with
-each layer in the stack using lower level features from the layers
-below it to supply higher level features to the layers above it
+developers write software as a series of modular components, with each
+layer in the stack using lower level features from the layers below it
+to supply higher level features to the layers above it
 (\cref{fig:pyafm:stack}).  New high-level programs will contain logic
 for the new idea (perform velocity-clamp unfolding experiments) and
 leverage pre-existing packages for all the old ideas that you need to