Small typeo. (I wouldn't bother except that it made the sentence hard for me to parse on a casual read.)
diff --git a/htdocs/index.html b/htdocs/index.html
index 962556e..1a76d6f 100644
--- a/htdocs/index.html
+++ b/htdocs/index.html
@@ -21,7 +21,7 @@ license</a>.
<h2>What is libffi?</h2>
-Compilers for high level languages generate code that follow certain
+Compilers for high level languages generate code that follows certain
conventions. These conventions are necessary, in part, for separate
compilation to work. One such convention is the "calling
convention". The "calling convention" is a set of assumptions made by