update packages to format 3

Author: vooon

mavros/package.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0"?>
-<package format="2">
+<?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
+<package format="3">
   <name>mavros</name>
   <version>2.12.0</version>
   <description>

mavros_examples/package.xml

@@ -2,15 +2,14 @@
 <?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format="3">
   <name>mavros_examples</name>
-  <version>0.0.1</version>
+  <version>2.12.0</version>
   <description>
-    Example scripts demonstrating MAVROS usage in ROS 2
+    Example scripts demonstrating MAVROS usage
   </description>
 
   <maintainer email="[email protected]">Haroon Rasheed</maintainer>
   <author email="[email protected]">Haroon Rasheed</author>
 
-
   <license>GPLv3</license>
   <license>LGPLv3</license>
   <license>BSD</license>

mavros_extras/package.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0"?>
-<package format="2">
+<?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
+<package format="3">
   <name>mavros_extras</name>
   <version>2.12.0</version>
   <description>

mavros_msgs/package.xml

@@ -4,7 +4,7 @@
   <name>mavros_msgs</name>
   <version>2.12.0</version>
   <description>
-    mavros_msgs defines messages for <a href="http://wiki.ros.org/mavros">MAVROS</a>.
+    Messages for <a href="http://wiki.ros.org/mavros">MAVROS</a>.
   </description>
 
   <maintainer email="[email protected]">Vladimir Ermakov</maintainer>