Fix unescaped document comments possibly interpreted as commands. [ci skip]

include/ircd/http.h

@@ -137,7 +137,7 @@ struct ircd::http::error
 	~error() noexcept;
 };
 
-/// Represents a single \r\n delimited line used in HTTP.
+/// Represents a single \\r\\n delimited line used in HTTP.
 ///
 /// This object is just a string_view of that line. The actual data backing
 /// that view is the responsibility of the user. This object is constructed

include/ircd/m/homeserver.h

@@ -60,7 +60,7 @@ struct ircd::m::homeserver
 	/// Database
 	std::shared_ptr<dbs::init> database;
 
-	/// An inscription of @ircd:network.name to root various references to
+	/// An inscription of `\@ircd:network.name` to root various references to
 	/// a user representing the server.
 	m::user::id::buf self;
 
@@ -137,7 +137,7 @@ struct ircd::m::homeserver::conf
 
 struct ircd::m::homeserver::opts
 {
-	/// Network name. This is the mxid hostpart (i.e @user:origin).
+	/// Network name. This is the mxid hostpart (i.e `\@user:origin`).
 	string_view origin;
 
 	/// This server's name. This is the unique domain-name of this server

include/ircd/m/id.h

@@ -135,7 +135,7 @@ enum ircd::m::id::sigil
 ///
 /// Users within Matrix are uniquely identified by their Matrix user ID. The
 /// user ID is namespaced to the homeserver which allocated the account and
-/// has the form: `@localpart:domain` The localpart of a user ID is an opaque
+/// has the form: `\@localpart:domain` The localpart of a user ID is an opaque
 /// identifier for that user. It MUST NOT be empty, and MUST contain only the
 /// characters a-z, 0-9, ., _, =, -, and /. The domain of a user ID is the
 /// server name of the homeserver which allocated the account. The length of