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

man/coredns-header.7

@@ -1,14 +1,14 @@
 .\" Generated by Mmark Markdown Processer - mmark.miek.nl
-.TH "COREDNS-HEADER" 7 "July 2021" "CoreDNS" "CoreDNS Plugins"
+.TH "COREDNS-HEADER" 7 "March 2026" "CoreDNS" "CoreDNS Plugins"
 
 .SH "NAME"
 .PP
-\fIheader\fP - modifies the header for responses.
+\fIheader\fP - modifies the header for queries and responses.
 
 .SH "DESCRIPTION"
 .PP
-\fIheader\fP ensures that the flags are in the desired state for responses. The modifications are made transparently for
-the client.
+\fIheader\fP ensures that the flags are in the desired state for queries and responses.
+The modifications are made transparently for the client and subsequent plugins.
 
 .SH "SYNTAX"
 .PP
@@ -16,13 +16,15 @@ the client.
 
 .nf
 header {
-    ACTION FLAGS...
-    ACTION FLAGS...
+    SELECTOR ACTION FLAGS...
+    SELECTOR ACTION FLAGS...
 }
 
 .fi
 .RE
 
+.IP \(bu 4
+\fBSELECTOR\fP defines if the action should be applied on \fB\fCquery\fR or \fB\fCresponse\fR.
 .IP \(bu 4
 \fBACTION\fP defines the state for DNS message header flags. Actions are evaluated in the order they are defined so last one has the
 most precedence. Allowed values are:
@@ -58,7 +60,7 @@ Make sure recursive available \fB\fCra\fR flag is set in all the responses:
 .nf
 \&. {
     header {
-        set ra
+        response set ra
     }
 }
 
@@ -74,8 +76,24 @@ Make sure "recursion available" \fB\fCra\fR and "authoritative answer" \fB\fCaa\
 .nf
 \&. {
     header {
-        set ra aa
-        clear rd
+        response set ra aa
+        response clear rd
+    }
+}
+
+.fi
+.RE
+
+.PP
+Make sure "recursion desired" \fB\fCrd\fR is set for all subsequent plugins::
+
+.PP
+.RS
+
+.nf
+\&. {
+    header {
+        query set rd
     }
 }