[DOCS] Various improvements (#224)

- Added docstr for autotune, Config, heuristics
- Added docstr for atomics
- Hiding internal _builder argument used for built-in language primitives
- Re-factor docstr to use common templates between similar functions.

docs/conf.py

@@ -24,11 +24,20 @@
 # -- General configuration ------------------------------------------------
 
 
+
+
+def process_sig(app, what, name, obj, options, signature, return_annotation):
+    if signature and '_builder' in signature:
+        signature = signature.split('_builder')[0] + ")" 
+    return (signature, return_annotation)
+
 def setup(app):
     """Customize function args retrieving to get args under decorator."""
     import sphinx
     import triton
 
+    app.connect("autodoc-process-signature", process_sig)
+
     def forward_jit_fn(func):
         old = func
 
@@ -39,6 +48,7 @@ def setup(app):
 
         return wrapped
 
+
     old_documenter = sphinx.ext.autosummary.get_documenter
 
     def documenter(app, obj, parent):