Use the new module-key for the FL module when hyperlinking (the old
one caused problems on case-insensitive file systems).
diff --git a/Doc/lib/libfl.tex b/Doc/lib/libfl.tex
index 127e397..26133fd 100644
--- a/Doc/lib/libfl.tex
+++ b/Doc/lib/libfl.tex
@@ -14,7 +14,8 @@
Most functions are literal translations of their C equivalents,
dropping the initial \samp{fl_} from their name. Constants used by
-the library are defined in module \refmodule{FL} described below.
+the library are defined in module \refmodule[fl-constants]{FL}
+described below.
The creation of objects is a little different in Python than in C:
instead of the `current form' maintained by the library to which new