move time range selection to additional parameters section

Author: volodymyrss

docs/heasarc/heasarc.rst

@@ -58,19 +58,6 @@ coordinates:
 Note that the :meth:`~astroquery.heasarc.HeasarcClass.query_region` converts 
 the passed coordinates to the FK5 reference frame before submitting the query.
 
-It is also possible to select time range:
-
-.. code-block:: python
-
-    >>> from astroquery.heasarc import Heasarc
-    >>> heasarc = Heasarc()
-    >>> table = heasarc.query_region('3C273', mission="numaster", radius='1 degree', time='2019-01-01 .. 2020-01-01')
-    >>> table.pprint()
-     NAME    RA     DEC         TIME          OBSID     STATUS  EXPOSURE_A OBSERVATION_MODE OBS_TYPE PROCESSING_DATE  PUBLIC_DATE ISSUE_FLAG                 SEARCH_OFFSET_               
-           DEGREE  DEGREE       MJD                                 S                                      MJD            MJD                                                             
-    ----- -------- ------ ---------------- ----------- -------- ---------- ---------------- -------- ---------------- ----------- ---------- ---------------------------------------------
-    3C273 187.2473 2.0362       58666.3272 10502620002 ARCHIVED      49410 SCIENCE          CAL            59054.3142       58677          0 2.077 (187.2779215031367,2.0523867628597445)
-
 Modifying returned table columns
 --------------------------------
 
@@ -165,6 +152,20 @@ returned. The following will store only the first 10 results:
 
 All of the above parameters can be mixed and matched to refine the query results.
 
+It is also possible to select time range:
+
+.. code-block:: python
+
+    >>> from astroquery.heasarc import Heasarc
+    >>> heasarc = Heasarc()
+    >>> table = heasarc.query_region('3C273', mission="numaster", radius='1 degree', time='2019-01-01 .. 2020-01-01')
+    >>> table.pprint()
+     NAME    RA     DEC         TIME          OBSID     STATUS  EXPOSURE_A OBSERVATION_MODE OBS_TYPE PROCESSING_DATE  PUBLIC_DATE ISSUE_FLAG                 SEARCH_OFFSET_               
+           DEGREE  DEGREE       MJD                                 S                                      MJD            MJD                                                             
+    ----- -------- ------ ---------------- ----------- -------- ---------- ---------------- -------- ---------------- ----------- ---------- ---------------------------------------------
+    3C273 187.2473 2.0362       58666.3272 10502620002 ARCHIVED      49410 SCIENCE          CAL            59054.3142       58677          0 2.077 (187.2779215031367,2.0523867628597445)
+
+
 Getting list of available missions
 ----------------------------------