Add Twitter to the list of excluded sites

ISSOtm · ISSOtm · commit 3f1c43ef515e · 2023-06-14T00:29:45.000+02:00
HEAD requests appear to return 403s, and unfortunately linkcheck uses those.
The current Twitter link is fairly benign, so stop checking it, I guess.
diff --git a/book.toml b/book.toml
@@ -44,4 +44,5 @@ exclude = [
 	'print.html', # Do not check the print page, as it is generated separately
 	'single.html', # Do not check the single page, as it is generated separately
 	'http[s]*://problemkaputt\.de', # Skip checking problemkaputt.de, as connection to this domain is generally unreliable
+	'https?://twitter.com', # Thank you Elon Musk.
 ]

Original file line number	Diff line number	Diff line change
`@@ -44,4 +44,5 @@ exclude = [`
`44`	`44`	`'print.html', # Do not check the print page, as it is generated separately`
`45`	`45`	`'single.html', # Do not check the single page, as it is generated separately`
`46`	`46`	`'http[s]*://problemkaputt\.de', # Skip checking problemkaputt.de, as connection to this domain is generally unreliable`
	`47`	`+ 'https?://twitter.com', # Thank you Elon Musk.`
`47`	`48`	`]`