put changelong entry in the correct section

Author: Clara Brasseur

CHANGES

@@ -44,6 +44,7 @@
 - JPLHorizons: Fix queries for major solar system bodies when sub-observer or sub-solar positions are requested. [#1268]
 - JPLHorizons: Fix bug with airmass column. [#1284]
 - docs: Clarifying install instructions [#1270]
+- MAST: TESS input catalog bugfix [#1297]
 
 
 0.3.8 (2018-04-27)
@@ -74,7 +75,6 @@
 - utils.TAP: Fix jobsIDs assignment. [#1105]
 - VO_CONESEARCH: URL for validated services have changed. Old URL should still
   redirect but it is deprecated. [#1033]
-- MAST: TESS input catalog bugfix [#1297]
 
 0.3.7 (2018-01-25)
 ------------------