style: move the ERP section to the Web Development group

Maintainer challenge upheld: Odoo is a ready-made web application
platform you extend, the sibling concept of CMS and Admin Panels —
so the section belongs beside them, not in the Other grab-bag (its
first placement was inertia from tryton's Miscellaneous home). TOC
and body both move; the group's section tail stays alphabetical
(Admin Panels, CMS, ERP, Static Site Generators).

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -30,6 +30,7 @@ An opinionated guide to the best Python frameworks, libraries, tools, and resour
 - [Authentication](#authentication)
 - [Admin Panels](#admin-panels)
 - [CMS](#cms)
+- [ERP](#erp)
 - [Static Site Generators](#static-site-generators)
 
 **HTTP & Scraping**
@@ -121,7 +122,6 @@ An opinionated guide to the best Python frameworks, libraries, tools, and resour
 
 **Other**
 
-- [ERP](#erp)
 - [Hardware](#hardware)
 - [Microsoft Windows](#microsoft-windows)
 - [Miscellaneous](#miscellaneous)
@@ -338,6 +338,12 @@ _Content Management Systems._
 - [wagtail](https://github.com/wagtail/wagtail) - A Django content management system.
 - [django-cms](https://github.com/django-cms/django-cms) - The easy-to-use and developer-friendly enterprise CMS powered by Django.
 
+### ERP
+
+_Enterprise resource planning frameworks._
+
+- [odoo](https://github.com/odoo/odoo) - A suite of open source business apps: CRM, e-commerce, accounting, inventory, and thousands of community modules.
+
 ### Static Site Generators
 
 _Static site generator is a software that takes some text + templates as input and produces HTML files on the output._
@@ -1117,12 +1123,6 @@ _Libraries for application-layer web security._
 
 **Other**
 
-### ERP
-
-_Enterprise resource planning frameworks._
-
-- [odoo](https://github.com/odoo/odoo) - A suite of open source business apps: CRM, e-commerce, accounting, inventory, and thousands of community modules.
-
 ### Hardware
 
 _Libraries for programming with hardware._