Cross-link to FAQ

Author: dranjan

doc/faq.md

@@ -1,5 +1,6 @@
 # FAQ
 
+(faq-list-from-2d)=
 ## How do I initialize a list property from two-dimensional array?
 
 ```Python Console

doc/usage.md

@@ -196,7 +196,8 @@ be represented as an `object`-typed field, each of whose values is an
 array of type `'i4'` and length 3.  The reason is simply that the PLY
 format provides no way to find out that each "vertex_indices" field has
 length 3 without actually reading all the data, so `plyfile` has to
-assume that this is a variable-length property.  However, see the FAQ
+assume that this is a variable-length property.  However, see the
+[FAQ](#faq-list-from-2d)
 for an easy way to recover a two-dimensional array
 from a list property, and also see the notes above about the
 `known_list_len` kwarg to speed up the reading of files with lists of