Update data-products.rst

docs/data-products.rst

@@ -357,7 +357,7 @@ integer. Bit 0 is used to mark whether the particle has ever been inside
 the largest L2 halo of a L1 halo with more than 35 particles; this is
 available to aid in merger tree construction.
 
-When using the ``npstartA'' and ``npoutA`` fields to index the halo particle
+When using the ``npstartA`` and ``npoutA`` fields to index the halo particle
 subsamples, one might noticed that ``sum(halos['npoutA'])`` is less than
 ``len(halo_subsamples)``.  In other words, there are unindexed halo particles.
 This is because the subsamples are taken from the L0 particles, but only