docs: update plugins number

Author: donhui

Diff for: README.rst

@@ -99,7 +99,7 @@ Features
 
 - Python 3.8+ or PyPy3
 
-- Rich plugin architecture, with over 850+ `external plugins <https://docs.pytest.org/en/latest/reference/plugin_list.html>`_ and thriving community
+- Rich plugin architecture, with over 1300+ `external plugins <https://docs.pytest.org/en/latest/reference/plugin_list.html>`_ and thriving community
 
 
 Documentation

Diff for: doc/en/index.rst

@@ -81,7 +81,7 @@ Features
 
 - Python 3.8+ or PyPy 3
 
-- Rich plugin architecture, with over 800+ :ref:`external plugins <plugin-list>` and thriving community
+- Rich plugin architecture, with over 1300+ :ref:`external plugins <plugin-list>` and thriving community
 
 
 Documentation