Fix typos in PTZ.xml, addon/tls-configuration.adoc, and Receiver.xml (#727)

Author: amakrushin

addon/tls-configuration.adoc

@@ -229,7 +229,7 @@ This section describes the operations related to device discovery.
 ==== Device requirements
 
 * *Device shall support listing capabilities via the GetServices and GetServiceCapabilities operation.*
-* *Device shall declare the Add-on support via GetServices and GetServiceCapabilties response“Addons” list using the following text string:*
+* *Device shall declare the Add-on support via GetServices and GetServiceCapabilities response“Addons” list using the following text string:*
 
 TLSServerConfiguration
 

doc/PTZ.xml

@@ -682,7 +682,7 @@ Add GeoMove</revremark>
       </section>
       <section>
         <title>GetCompatibleConfigurations</title>
-        <para>A device signalling support for GetCompatibleConfigurations via the capability GetCompatibleConfigurations shall return all available PTZConfigurations that can be added to the referenced media profile through the GetComatibleConfigurations operation.</para>
+        <para>A device signalling support for GetCompatibleConfigurations via the capability GetCompatibleConfigurations shall return all available PTZConfigurations that can be added to the referenced media profile through the GetCompatibleConfigurations operation.</para>
         <para>A device providing more than one PTZConfiguration or more than one VideoSourceConfiguration or which has any other resource interdependency between PTZConfiguration entities and other resources listable in a media profile should implement this operation. PTZConfiguration entities returned by this operation shall not fail on adding them to the referenced media profile.</para>
         <variablelist role="op">
           <varlistentry>
@@ -1414,7 +1414,7 @@ Add GeoMove</revremark>
         <section xml:id="_Ref469301646">
           <title>Spherical pan/tilt position space in degrees</title>
           <para>
-            <xref linkend="_Ref469303432" /> shows a camera with pan and tilt mechanics and the corresponding spherical coordinate system. The space description assumes that the dome is mounted on the ceiling. The definition of a Pan movement is the rotation of the camera module around the pan axis. Thereby, the tilt axis is also rotated in the same direction in the plane orthogonal to the pan axis, so that it is still orthogonal to the camera lens axis. Tilt movement is the rotation of the camera module around the tilt axis. W ith the tilt axis the camera direction can be changed from looking downward to looking at the horizon. Some devices may support a camera which can look above the horizon.</para>
+            <xref linkend="_Ref469303432" /> shows a camera with pan and tilt mechanics and the corresponding spherical coordinate system. The space description assumes that the dome is mounted on the ceiling. The definition of a Pan movement is the rotation of the camera module around the pan axis. Thereby, the tilt axis is also rotated in the same direction in the plane orthogonal to the pan axis, so that it is still orthogonal to the camera lens axis. Tilt movement is the rotation of the camera module around the tilt axis. With the tilt axis the camera direction can be changed from looking downward to looking at the horizon. Some devices may support a camera which can look above the horizon.</para>
           <para>The angles describing the rotation around pan and tilt axis are referred to as pan and tilt angles, where pan is represented by the X coordinate of the position vector and tilt is represented by the Y coordinate of the position vector. Both angles are specified in degrees. The initial position of this coordinate system is when the direction of the camera lens is parallel to the ceiling. The pan and tilt angles in this initial direction are zero (0,0).</para>
           <para>When starting from the initial direction and increasing the pan angle, objects that have previously been in the centre of the image will move towards the left of the image. When starting from the initial direction and increasing the tilt angle, objects which have been previously in the middle of the image move towards the bottom of the image.</para>
           <para>The maximum range for pan and tilt angles are between -180 and +180 degrees <footnote xml:id="__FN1__"><para>-180 and +180 is the same pan position in the space and the camera can choose to represent the pan position using any of them</para></footnote>. The device can restrict the tilt range arbitrarily. The tilt angle of a camera can change its direction in the space of a hemisphere like a dome camera that is typically bounded from 0 to -90 degrees. If a device cannot pan the full range, it may limit the pan range to an appropriate interval.</para>

doc/Receiver.xml

@@ -512,7 +512,7 @@
           <term>response</term>
           <listitem>
             <para role="param">Capabilities [trv:Capabilities]</para>
-            <para role="text">List of capabilties as defined below.</para>
+            <para role="text">List of capabilities as defined below.</para>
           </listitem>
         </varlistentry>
         <varlistentry>