fix some build warnings

docs/configuration/interfaces/openvpn.rst

@@ -71,7 +71,7 @@ In both cases, we will use the following settings:
   dynamic IP for our remote router.
 
 Setting up certificates
------------------------
+=======================
 
 Setting up a full-blown PKI with a CA certificate would arguably defeat the purpose
 of site-to-site OpenVPN, since its main goal is supposed to be configuration simplicity,
@@ -129,7 +129,7 @@ Note: certificate names don't matter, we use 'openvpn-local' and 'openvpn-remote
 Repeat the procedure on the other router.
 
 Setting up OpenVPN
-------------------
+==================
 
 Local Configuration:
 
@@ -148,6 +148,7 @@ Local Configuration:
   set interfaces openvpn vtun1 tls certificate 'openvpn-local'                    # The self-signed certificate
   set interfaces openvpn vtun1 tls peer-fingerprint <remote cert fingerprint>     # The output of 'run show pki certificate <name> fingerprint sha256
                                                                                     on the remote rout
+
 Remote Configuration:
 
 .. code-block:: none
@@ -163,8 +164,9 @@ Remote Configuration:
   set interfaces openvpn vtun1 tls certificate 'openvpn-remote'                    # The self-signed certificate
   set interfaces openvpn vtun1 tls peer-fingerprint <local cert fingerprint>       # The output of 'run show pki certificate <name> fingerprint sha256
                                                                                     on the local router
+
 Pre-shared keys
----------------
+===============
 
 Until VyOS 1.4, the only option for site-to-site OpenVPN without PKI was to use pre-shared keys.
 That option is still available but it is deprecated and will be removed in the future.
@@ -200,6 +202,7 @@ Then you need to install the key on the remote router:
 Then you need to set the key in your OpenVPN interface settings:
 
 .. code-block:: none
+
   set interfaces openvpn vtun1 shared-secret-key s2s
 
 Firewall Exceptions
@@ -433,6 +436,7 @@ Branch 1's router might have the following lines:
   set interfaces openvpn vtun10 tls ca-cert ca-1
   set interfaces openvpn vtun10 tls certificate branch-1
 
+
 Client Authentication
 =====================
 

docs/configuration/protocols/ospf.rst

@@ -1204,7 +1204,7 @@ Interface Configuration
    synchronizing process of the router's database with all neighbors. The
    default value is 1 seconds. The interval range is 3 to 65535.
 
-.. _ospf:v3_redistribution_config:
+.. _ospf:v3_graceful_restart:
 
 Graceful Restart
 ----------------
@@ -1245,6 +1245,8 @@ Graceful Restart
 
    By default, it supports both planned and unplanned outages.
 
+.. _ospf:v3_redistribution_config:
+
 Redistribution Configuration
 ----------------------------
 

docs/configuration/protocols/pim.rst

@@ -180,6 +180,8 @@ IGMP - Internet Group Management Protocol)
    Configure watermark warning generation for an IGMP group limit. Generates
    warning once the configured group limit is reached while adding new groups.
 
+.. _pim:igmp_interface_commands:
+
 Interface specific commands
 ===========================
 
@@ -202,7 +204,7 @@ Interface specific commands
    Use this command to configure in the selected interface the IGMP
    query response timeout value (10-250) in deciseconds. If a report is
    not returned in the specified time, it will be assumed the (S,G) or
-   (*,G) state :rfc:`7761#section-4.1` has timed out.
+   (\*,G) state :rfc:`7761#section-4.1` has timed out.
 
 .. cfgcmd:: set protocols pim interface <interface> igmp version <version-number>
 

docs/configuration/service/dhcp-relay.rst

@@ -154,6 +154,8 @@ Configuration
 
    Disable dhcpv6-relay service.
 
+.. _dhcp_relay:v6_options:
+
 Options
 -------
 

docs/configuration/vrf/index.rst

@@ -282,6 +282,8 @@ Configuration
 VRF and NAT
 -----------
 
+.. _vrf:nat_configuration:
+
 Configuration
 ^^^^^^^^^^^^^
 

docs/introducing/history.rst

@@ -110,7 +110,7 @@ Sagitta (the Arrow) is the codename of the current development
 branch, so there's no VyOS 1.4 yet.
 
 Circinus (1.5)
--------------
+--------------
 
 Circinus (the Compass) is the codename of the upcoming development
 branch, so there's no VyOS 1.5 yet.