DOC:history: Update syntax for referencing write/set_crs

Author: snowman2

docs/history.rst

@@ -4,7 +4,7 @@ History
 0.16.0
 ------
 - ENH: Add `allow_one_dimensional_raster` option to `rio.clip_box` (issue #708)
-- MNT: recommend write_crs & deprecate set_crs (pull #793)
+- MNT: recommend `rio.write_crs`` & deprecate `rio.set_crs` (pull #793)
 
 0.15.7
 ------