openconnect: unify indentation in README

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

net/openconnect/README

@@ -3,15 +3,15 @@ The openconnect client expects to be configured using the uci interface.
 To setup a VPN connection, add the following to /etc/config/network:
 
 config interface 'MYVPN'
-        option proto 'openconnect'
-        option interface 'wan'
-        option server 'vpn.example.com'
-        option port '4443'
-        option username 'test'
-        option password 'secret'
-        option serverhash 'AE7FF6A0426F0A0CD0A02EB9EC3C5066FAEB0B25'
+	option proto 'openconnect'
+	option interface 'wan'
+	option server 'vpn.example.com'
+	option port '4443'
+	option username 'test'
+	option password 'secret'
+	option serverhash 'AE7FF6A0426F0A0CD0A02EB9EC3C5066FAEB0B25'
 	option defaultroute '0'
-        option authgroup 'DEFAULT'
+	option authgroup 'DEFAULT'
 
 	# For second factor auth:
 
@@ -19,12 +19,12 @@ config interface 'MYVPN'
 	#option password2 'my-fixed-2fa-password'
 
 	# RSA tokens, must be built with stoken support
-        #option token_mode 'rsa'
-        #option token_secret 'secret'
+	#option token_mode 'rsa'
+	#option token_secret 'secret'
 
 	# HOTP/TOTP tokens
-        #option token_mode 'hotp'
-        #option token_secret '00'
+	#option token_mode 'hotp'
+	#option token_secret '00'
 
 	# tokens from script
 	#option token_mode 'script'
@@ -45,6 +45,5 @@ deinitialize it using ifdown. You may also use the luci web interface
 Note that you need to configure the firewall to allow communication between
 the MYVPN interface and lan.
 
-
 There is a luci plugin to allow configuring an openconnect interface from
 the web environment; see the luci-proto-openconnect package.