linklint is now sphinx_linklint (#1893)

* linklint is now sphinx_linklint

* use the canonical package name

Author: nedbat

conf.py

@@ -3,14 +3,14 @@
 from urllib.request import urlopen
 
 extensions = [
-    'linklint.ext',
     'notfound.extension',
     'sphinx.ext.extlinks',
     'sphinx.ext.intersphinx',
     'sphinx.ext.todo',
     'sphinx_copybutton',
     'sphinx_inline_tabs',
     'sphinx_last_updated_by_git',
+    'sphinx_linklint.ext',
     'sphinxcontrib.youtube',
     'sphinxext.opengraph',
     'sphinxext.rediraffe',

documentation/style-guide.rst

@@ -237,7 +237,7 @@ the second mention is more appropriate for a link.  Some units are long enough
 to have a few repeated links.  Use judgement to decide when a link will help
 the reader.
 
-We use the :pypi:`linklint Sphinx extension <linklint>` to suppress two kinds
+We use the :pypi:`linklint Sphinx extension <sphinx-linklint>` to suppress two kinds
 of excessive links: references in a section to itself and duplicate references
 in a paragraph.  Previously, editors had to carefully use an exclamation mark
 in a Sphinx reference (``:func:`!map```) to prevent such links.

requirements.txt

@@ -1,12 +1,12 @@
 furo>=2025.12.19
 jinja2
-linklint
 sphinx-autobuild>=2025.8.25
 sphinx-inline-tabs>=2025.12.21.14
 sphinx-last-updated-by-git>=0.3.8
 sphinx-lint==1.0.2
 sphinx-notfound-page>=1.1.0
 sphinx_copybutton>=0.5.2
+sphinx_linklint
 sphinxcontrib-youtube>=1.5.0
 sphinxext-opengraph>=0.13.0
 sphinxext-rediraffe