doxygen: fix doxygen tags

- Missing tags mess up doxygen TOC heirarchy

Type: docs

Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Change-Id: I012d55c0ae90aecc665b56903f4212ddc0643943
diff --git a/doxygen/dev_doc.md b/doxygen/dev_doc.md
index b5306d5..20e71a9 100644
--- a/doxygen/dev_doc.md
+++ b/doxygen/dev_doc.md
@@ -21,3 +21,6 @@
 - @subpage mdata_doc
 - @subpage mempreload_doc
 - @subpage pnat_doc
+- @subpage snap_doc
+- @subpage srv6_ad_flow_plugin_doc
+- @subpage strongswan_test_doc
diff --git a/doxygen/user_doc.md b/doxygen/user_doc.md
index f19faef..ff597c0 100644
--- a/doxygen/user_doc.md
+++ b/doxygen/user_doc.md
@@ -15,7 +15,7 @@
 - @subpage lb_plugin_doc
 - @subpage lldp_doc
 - @subpage map_doc
-- @subpage marvel_plugin_doc
+- @subpage marvell_plugin_doc
 - @subpage srv6_mobile_plugin
 - @subpage mtu_doc
 - @subpage nat64_doc
@@ -31,3 +31,5 @@
 - @subpage vmxnet3_doc
 - @subpage af_xdp_doc
 - @subpage wireguard_plugin_doc
+- @subpage vpp_top_doc
+- @subpage stats_fs_doc
diff --git a/extras/snap/README.md b/extras/snap/README.md
index 9387184..47fdd3c 100644
--- a/extras/snap/README.md
+++ b/extras/snap/README.md
@@ -1,3 +1,6 @@
+VPP Snap Build   {#snap_doc}
+--------------
+
 General
 -------
 
diff --git a/extras/strongswan/README.md b/extras/strongswan/README.md
index 58cbcd9..48d0224 100644
--- a/extras/strongswan/README.md
+++ b/extras/strongswan/README.md
@@ -1,4 +1,4 @@
-## vpp-sswan-test
+# VPP Swanstrong Testing Recipe {#strongswan_test_doc}
 
 Simple test framework for VPP and strongSwan scenarios.
 
diff --git a/extras/vpp_stats_fs/README.md b/extras/vpp_stats_fs/README.md
index 3b0b094..c5ec812 100755
--- a/extras/vpp_stats_fs/README.md
+++ b/extras/vpp_stats_fs/README.md
@@ -1,4 +1,4 @@
-# VPP stats segment FUSE filesystem
+# VPP stats segment FUSE filesystem  {#stats_fs_doc}
 
 The statfs binary allows to create a FUSE filesystem to expose and to browse the stats segment.
 Is is leaned on the Go-FUSE library and requires Go-VPP stats bindings to work.
@@ -58,4 +58,4 @@
 To force the unmount even if the resource  is busy, add the -z option:
 ```bash
 sudo fusermount -uz /path/to/mountpoint
-```
\ No newline at end of file
+```
diff --git a/extras/vpptop/README.md b/extras/vpptop/README.md
index 215f7df..c0f4dc9 100644
--- a/extras/vpptop/README.md
+++ b/extras/vpptop/README.md
@@ -1,4 +1,4 @@
-## VPPTop installer
+# VPP Top Installation {#vpp_top_doc}
 
 [VPPTop]((https://github.com/PANTHEONtech/vpptop)) is a real-time data viewer for VPP interfaces and metrics displayed in dynamic terminal user interface, written in GO.
 
@@ -23,5 +23,3 @@
 GOPATH=/root/go/
 
 If you have the GO already installed and have to run the installer with `sudo`, use the `-E` switch to provide those variables to the installer.
-
-