User Doc: Fix several typing error

before the privileges are dropped, but the config file is read after that. The

privilege restriction is not implemented in BSD port of BIRD.

<p>A nonprivileged user (as an argument to <cf/-u/ options) may be the user

<p>An unprivileged user (as an argument to <cf/-u/ options) may be the user

<cf/nobody/, but it is suggested to use a new dedicated user account (like

<cf/bird/). The similar considerations apply for the group option, but there is

one more condition -- the users in the same group can use <file/birdc/ to

a comment, whitespace characters are treated as a single space. If there's a

variable number of options, they are grouped using the <cf/{ }/ brackets. Each

option is terminated by a <cf/;/. Configuration is case sensitive. There are two

ways how to name symbols (like protocol names, filter names, constats etc.). You

ways how to name symbols (like protocol names, filter names, constants etc.). You

can either use a simple string starting with a letter followed by any

combination of letters and numbers (e.g. "R123", "myfilter", "bgp5") or you can

enclose the name into apostrophes (<cf/'/) and than you can use any combination

	configuration could be either confirmed using <cf/configure confirm/

	command, or it will be reverted to the old one when the config timer

	expires. This is useful for cases when reconfiguration breaks current

	routing and a router becames inaccessible for an administrator. The

	routing and a router becomes inaccessible for an administrator. The

	config timeout expiration is equivalent to <cf/configure undo/

	command. The timeout duration could be specified, default is 300 s.

	of type <cf/string/, print such variables, use standard string

	comparison operations (e.g. <cf/=, !=, &lt;, &gt;, &lt;=, &gt;=/), but

	you can't concatenate two strings. String literals are written as

	<cf/"This is a string constant"/. Additionaly matching <cf/&tilde;/

	<cf/"This is a string constant"/. Additionally matching <cf/&tilde;/

	operator could be used to match a string value against a shell pattern

	(represented also as a string).

	The session is identified by the IP address of the neighbor, with

	optional specification of used interface and local IP. By default

	the neighbor must be directly connected, unless the the session is

	the neighbor must be directly connected, unless the session is

	configured as multihop. Note that local IP must be specified for

	multihop sessions.

</descrip>

	Default: 5.

	<tag>passive <m/switch/</tag>

	Generally, both BFD session endpoinds try to establish the session by

	Generally, both BFD session endpoints try to establish the session by

	sending control packets to the other side. This option allows to enable

	passive mode, which means that the router does not send BFD packets

	until it has received one from the other side. Default: disabled.

	<tag>dead <M>num</M></tag>

	When the router does not receive any messages from a neighbor in

	<m/dead/ seconds, it will consider the neighbor down. If both directives

	<cf/dead count/ and <cf/dead/ are used, <cf/dead/ has precendence.

	<cf/dead count/ and <cf/dead/ are used, <cf/dead/ has precedence.

	<tag>secondary <M>switch</M></tag>

	On BSD systems, older versions of BIRD supported OSPFv2 only for the