doc: Fix D-Bus page format with newer Doxygen versions

It looks like the space indentation before the HTML command ended up
being converted to HTML tags getting shown as code text rather than
being used to control formatting. Fix this by removing indentation from
the first line of each HTML segment.

Signed-off-by: Jouni Malinen <j@w1.fi>

doc/dbus.doxygen

@@ -21,7 +21,7 @@ registered in the bus with fi.w1.wpa_supplicant1 name.
 
 \subsection dbus_main_methods Methods
 
-    <ul>
+<ul>
       <li>
 	<h3>CreateInterface ( a{sv} : args ) --> o : interface</h3>
 	<p>Registers a wireless interface in %wpa_supplicant.</p>
@@ -96,7 +96,7 @@ registered in the bus with fi.w1.wpa_supplicant1 name.
 
 \subsection dbus_main_properties Properties
 
-    <ul>
+<ul>
       <li>
 	<h3>DebugLevel - s - (read/write)</h3>
 	<p>Global %wpa_supplicant debugging level. Possible values are
@@ -127,7 +127,7 @@ registered in the bus with fi.w1.wpa_supplicant1 name.
 
 \subsection dbus_main_signals Signals
 
-    <ul>
+<ul>
       <li>
 	<h3>InterfaceAdded ( o : interface, a{sv} : properties )</h3>
 	<p>A new interface was added to %wpa_supplicant.</p>
@@ -172,7 +172,7 @@ fi.w1.wpa_supplicant1.CreateInterface.
 
 \subsection dbus_interface_methods Methods
 
-    <ul>
+<ul>
       <li>
 	<h3>Scan ( a{sv} : args ) --> nothing</h3>
 	<p>Triggers a scan.</p>
@@ -441,7 +441,7 @@ fi.w1.wpa_supplicant1.CreateInterface.
 
 \subsection dbus_interface_properties Properties
 
-    <ul>
+<ul>
       <li>
 	<h3>Capabilities - a{sv} - (read)</h3>
 	<p>Capabilities of the interface. Dictionary contains following entries:</p>
@@ -550,7 +550,7 @@ fi.w1.wpa_supplicant1.CreateInterface.
 
 \subsection dbus_interface_signals Signals
 
-    <ul>
+<ul>
       <li>
 	<h3>ScanDone ( b : success )</h3>
 	<p>Scanning finished. </p>
@@ -678,7 +678,7 @@ Interface implemented by objects related to network interface added to
 
 \subsection dbus_wps_methods Methods
 
-    <ul>
+<ul>
       <li>
 	<h3>Start ( a{sv} : args ) --> a{sv} : output</h3>
 	<p>Starts WPS configuration.</p>
@@ -718,7 +718,7 @@ Interface implemented by objects related to network interface added to
 
 \subsection dbus_wps_properties Properties
 
-    <ul>
+<ul>
       <li>
 	<h3>ProcessCredentials - b - (read/write)</h3>
 	<p>Determines if the interface will process the credentials (credentials_processed configuration file parameter).</p>
@@ -727,7 +727,7 @@ Interface implemented by objects related to network interface added to
 
 \subsection dbus_wps_signals Signals
 
-    <ul>
+<ul>
       <li>
 	<h3>Event ( s : name, a{sv} : args )</h3>
 	<p>WPS event occurred.</p>
@@ -786,7 +786,7 @@ scan results.
 
 \subsection dbus_bss_properties Properties
 
-    <ul>
+<ul>
       <li>
 	<h3>BSSID - ay - (read)</h3>
 	<p>BSSID of the BSS.</p>
@@ -842,7 +842,7 @@ scan results.
 
 \subsection dbus_bss_signals Signals
 
-    <ul>
+<ul>
       <li>
 	<h3>PropertiesChanged ( a{sv} : properties )</h3>
 	<p>Some properties have changed.</p>
@@ -862,7 +862,7 @@ i.e., returned by fi.w1.wpa_supplicant1.Interface.AddNetwork.
 
 \subsection dbus_network_properties Properties
 
-    <ul>
+<ul>
       <li>
 	<h3>Enabled - b - (read/write)</h3>
 	<p>Determines if the configured network is enabled or not.</p>
@@ -876,7 +876,7 @@ i.e., returned by fi.w1.wpa_supplicant1.Interface.AddNetwork.
 
 \subsection dbus_network_signals Signals
 
-    <ul>
+<ul>
       <li>
 	<h3>PropertiesChanged ( a{sv} : properties )</h3>
 	<p>Some properties have changed.</p>