docs: manifest-format: reformat spec to align the CDATA parts

Most of the file was doing this, but we've been inconsistent when
adding new entries.  Realign all of them.

Change-Id: I99ddb3a1e859235b249b6f08731bdadad8086d4e
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/532461
Reviewed-by: Gavin Mak <gavinmak@google.com>
Commit-Queue: Mike Frysinger <vapier@google.com>
Tested-by: Mike Frysinger <vapier@google.com>

man/repo-manifest.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "November 2025" "repo manifest" "Repo Manual"
+.TH REPO "1" "December 2025" "repo manifest" "Repo Manual"
 .SH NAME
 repo \- repo manifest - manual page for repo manifest
 .SH SYNOPSIS
@@ -190,13 +190,25 @@ CDATA #IMPLIED>
 <!ELEMENT extend\-project (annotation*,
 copyfile*,
 linkfile*)>
+.TP
+<!ATTLIST extend\-project name
+CDATA #REQUIRED>
+.TP
+<!ATTLIST extend\-project path
+CDATA #IMPLIED>
+.TP
+<!ATTLIST extend\-project dest\-path
+CDATA #IMPLIED>
+.TP
+<!ATTLIST extend\-project groups
+CDATA #IMPLIED>
+.TP
+<!ATTLIST extend\-project revision
+CDATA #IMPLIED>
+.TP
+<!ATTLIST extend\-project remote
+CDATA #IMPLIED>
 .IP
-<!ATTLIST extend\-project name CDATA #REQUIRED>
-<!ATTLIST extend\-project path CDATA #IMPLIED>
-<!ATTLIST extend\-project dest\-path CDATA #IMPLIED>
-<!ATTLIST extend\-project groups CDATA #IMPLIED>
-<!ATTLIST extend\-project revision CDATA #IMPLIED>
-<!ATTLIST extend\-project remote CDATA #IMPLIED>
 <!ATTLIST extend\-project dest\-branch CDATA #IMPLIED>
 <!ATTLIST extend\-project upstream    CDATA #IMPLIED>
 <!ATTLIST extend\-project base\-rev    CDATA #IMPLIED>