Merge pull request #36 from pyranges/marco-mariotti-patch-3

Update how_to_genomic_ops.rst

Author: marco-mariotti

docs/how_to_genomic_ops.rst

@@ -6,7 +6,7 @@ Operating on coordinates
    :depth: 2
 
 Operating on coordinates: cheatsheet
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------------
 
 .. image:: images/cheatsheet_subseq.png
 
@@ -592,4 +592,4 @@ overlaps with the tile returned:
         7  |               1   133400   133600  -           ENST00000610542      200
         7  |               1   133600   133800  -           ENST00000610542      123
   PyRanges with 6 rows, 6 columns, and 1 index columns (with 4 index duplicates).
-  Contains 1 chromosomes and 2 strands.
+  Contains 1 chromosomes and 2 strands.