Trivial whitespace and comment fixes in cl.xml (#719)

Author: alycm

xml/cl.xml

@@ -239,9 +239,9 @@ server's OpenCL/api-docs repository.
         <type category="define">typedef <type>cl_uint</type>          <name>cl_sync_point_khr</name>;</type>
         <type category="define">typedef <type>cl_uint</type>          <name>cl_command_buffer_info_khr</name>;</type>
         <type category="define">typedef <type>cl_uint</type>          <name>cl_command_buffer_state_khr</name>;</type>
-        <type category="define">typedef <type>cl_properties</type>      <name>cl_command_buffer_properties_khr</name>;</type>
+        <type category="define">typedef <type>cl_properties</type>    <name>cl_command_buffer_properties_khr</name>;</type>
         <type category="define">typedef <type>cl_bitfield</type>      <name>cl_command_buffer_flags_khr</name>;</type>
-        <type category="define">typedef <type>cl_properties</type>      <name>cl_ndrange_kernel_command_properties_khr</name>;</type>
+        <type category="define">typedef <type>cl_properties</type>    <name>cl_ndrange_kernel_command_properties_khr</name>;</type>
         <type category="define">typedef struct _cl_mutable_command_khr* <name>cl_mutable_command_khr</name>;</type>
 
             <comment>Structure types</comment>
@@ -6838,7 +6838,7 @@ server's OpenCL/api-docs repository.
             <require comment="cl_command_buffer_properties_khr">
                <enum name="CL_COMMAND_BUFFER_FLAGS_KHR"/>
             </require>
-            <require comment="cl_command_buffer_flags_khr">
+            <require comment="cl_command_buffer_flags_khr - bitfield">
                <enum name="CL_COMMAND_BUFFER_SIMULTANEOUS_USE_KHR"/>
             </require>
             <require comment="Error codes">