document new converters

doc/odoo.addons.converter.rst

@@ -37,6 +37,14 @@
    :undoc-members:
    :show-inheritance:
 
+odoo.addons.converter.image module
+----------------------------------
+
+.. automodule:: odoo.addons.converter.image
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 odoo.addons.converter.keyfield module
 -------------------------------------
 
@@ -69,6 +77,14 @@
    :undoc-members:
    :show-inheritance:
 
+odoo.addons.converter.qr_code module
+------------------------------------
+
+.. automodule:: odoo.addons.converter.qr_code
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 odoo.addons.converter.relation module
 -------------------------------------