Fixed warnings with software list when building locally (#980)

* Fixed warnings with software list when building locally

* Swapped to to src

Author: michael-sandoval

conf.py

@@ -126,7 +126,8 @@ def copy_sw_file(app, exception):
     src = '/tmp/software_list_group.json'
     dest = os.path.join(app.builder.outdir, 'software/software_list/', 'software_list_group.json')
 
-    shutil.copy(src, dest)
+    if os.path.exists(src):
+        shutil.copy(src, dest)
 
 def setup(app):
     '''Function to setup sphinx customizations.'''

software/software_list/index.rst

@@ -15,7 +15,6 @@ the most recent scan, but has been seen previously in the last 60 days.  A
 module with the tag ``e4s`` gets its Spack build recipe from the Extreme-Scale
 Scientific Software Stack (E4S). 
 
-|
 .. _Module Usage Example:
 
 **Module Usage Example**