Link from projection parameter to gallery (#1044)

Author: Meghan Jones

pygmt/helpers/decorators.py

@@ -22,7 +22,7 @@
         projection : str
             *Required if this is the first plot command*.
             *projcode*\[*projparams*/]\ *width*.
-            Select map projection.""",
+            Select map :doc:`projection </projections/index>`.""",
     "B": r"""
         frame : bool or str or list
             Set map boundary frame and axes attributes.""",
@@ -198,7 +198,7 @@ def fmt_docstring(module_func):
     projection : str
         *Required if this is the first plot command*.
         *projcode*\[*projparams*/]\ *width*.
-        Select map projection.
+        Select map :doc:`projection </projections/index>`.
     <BLANKLINE>
     **Aliases:**
     <BLANKLINE>