Tweak section names

Author: rocky

mathics/builtin/files_io/__init__.py

@@ -1,5 +1,5 @@
 """
-Input/Output, Files, and Filesystem
+Files, Filesystem, and Input/Output
 
 """
 

mathics/builtin/import_export/compression.py

@@ -1,3 +1,7 @@
+"""
+Compression & Archive Formats
+"""
+
 from mathics.core.builtin import Builtin, String
 from mathics.core.evaluation import Evaluation
 from mathics.eval.import_export.compression import eval_ImportZIP

mathics/builtin/import_export/json.py

@@ -1,3 +1,7 @@
+"""
+JSON-Related Formats
+"""
+
 from mathics.core.builtin import Builtin, String
 from mathics.core.evaluation import Evaluation
 from mathics.eval.import_export.json import eval_JSONImport