cite: placeholder for version number

Leaving grass7 in the addon man page URL.


git-svn-id: https://svn.osgeo.org/grass/grass/trunk@72927 15284696-431f-4ddb-bdfa-cd5b030d7da7

CITING

@@ -8,20 +8,20 @@ module, you may cite the main author(s) along with the GRASS
 Development Team.
 
 Choices for citing the main GRASS GIS software (update YEAR and version
-number accordingly):
+number X.Y accordingly):
 
 * GRASS Development Team, YEAR. Geographic Resources Analysis Support
-  System (GRASS) Software, Version 7.2. Open Source Geospatial
+  System (GRASS) Software, Version X.Y. Open Source Geospatial
   Foundation. http://grass.osgeo.org
 * GRASS Development Team, YEAR. Geographic Resources Analysis Support
   System (GRASS) Programmer's Manual. Open Source Geospatial Foundation.
   Electronic document: http://grass.osgeo.org/programming7
 
 Citing a GRASS GIS Addon (update AUTHOR(S), YEAR, Addon-NAME, and
-version number accordingly):
+version number X.Y accordingly):
 
 * AUTHOR(S), and GRASS Development Team, YEAR Addon-NAME. Geographic
-  Resources Analysis Support System (GRASS) Software, Version 7.2.
+  Resources Analysis Support System (GRASS) Software, Version X.Y.
   Open Source Geospatial Foundation.
   https://grass.osgeo.org/grass7/manuals/addons/Addon-NAME.html
 
@@ -32,7 +32,7 @@ For other (scientific) references, see
 A BibTeX entry for LaTeX users is:
 
 @Manual{GRASS_GIS_software,
-  title = {Geographic Resources Analysis Support System (GRASS) Software, Version 7.2},
+  title = {Geographic Resources Analysis Support System (GRASS) Software, Version X.Y},
   author = {{GRASS Development Team}},
   organization = {Open Source Geospatial Foundation},
   address = {USA},