Remove .rst files and point conf.py to pick up .md

Author: snarang181

flang/docs/FIRLangRef.rst

@@ -42,6 +42,7 @@
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ["_templates"]
+source_suffix = [".md"]
 myst_heading_anchors = 6
 
 import sphinx
@@ -227,9 +228,7 @@
 
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
-man_pages = [
-    ('index', 'flang', 'Flang Documentation', ['Flang Contributors'], 1)
-]
+man_pages = [("index", "flang", "Flang Documentation", ["Flang Contributors"], 1)]
 
 # If true, show URL addresses after external links.
 # man_show_urls = False