chore(docs): regenerate man pages (#7971)

man/coredns-https3.7

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+.\" Generated by Mmark Markdown Processer - mmark.miek.nl
+.TH "COREDNS-HTTPS3" 7 "March 2026" "CoreDNS" "CoreDNS Plugins"
+
+.SH "NAME"
+.PP
+\fIhttps3\fP - configures DNS-over-HTTPS/3 (DoH3) server options.
+
+.SH "DESCRIPTION"
+.PP
+The \fIhttps3\fP plugin allows you to configure parameters for the DNS-over-HTTPS/3 (DoH3) server to fine-tune the security posture and performance of the server. HTTPS/3 uses QUIC as the underlying transport.
+
+.PP
+This plugin can only be used once per HTTPS3 listener block.
+
+.SH "SYNTAX"
+.PP
+.RS
+
+.nf
+https3 {
+    max\_streams POSITIVE\_INTEGER
+}
+
+.fi
+.RE
+
+.IP \(bu 4
+\fB\fCmax_streams\fR limits the number of concurrent QUIC streams per connection. This helps prevent unbounded streams on a single connection, exhausting server resources. The default value is 256 if not specified. Set to 0 to use underlying QUIC transport default.
+
+
+.SH "EXAMPLES"
+.PP
+Set custom limits for maximum streams:
+
+.PP
+.RS
+
+.nf
+https3://.:443 {
+    tls cert.pem key.pem
+    https3 {
+        max\_streams 50
+    }
+    whoami
+}
+
+.fi
+.RE
+
+.PP
+Set values to 0 for QUIC transport default, matching CoreDNS behaviour before v1.14.0:
+
+.PP
+.RS
+
+.nf
+https3://.:443 {
+    tls cert.pem key.pem
+    https3 {
+        max\_streams 0
+    }
+    whoami
+}
+
+.fi
+.RE
+