vendor-ibm-astlpc.md: Remove extra trailing spaces

Signed-off-by: George Liu <[email protected]>
Change-Id: Ibe64b5c1974b332f456683679900c94bab25e1a3

Author: lxwinspur

docs/bindings/vendor-ibm-astlpc.md

@@ -11,14 +11,14 @@ The following referenced documents are indispensable for the application of this
 document.
 
 1. DMTF DSP0236, Management Component Transport Protocol (MCTP) Base
-   Specification 1.0,  
+   Specification 1.0,
    <http://www.dmtf.org/standards/published_documents/DSP0236_1.0.pdf>
 
-2. Intel (R) Low Pin Count (LPC) Interface Specification 1.1,  
+2. Intel (R) Low Pin Count (LPC) Interface Specification 1.1,
    <https://www.intel.com/content/dam/www/program/design/us/en/documents/low-pin-count-interface-specification.pdf>
 
 3. IPMI Consortium, Intelligent Platform Management Interface Specification,
-   v1.5 Revision 1.1 February 20, 2002,  
+   v1.5 Revision 1.1 February 20, 2002,
    <http://download.intel.com/design/servers/ipmi/IPMIv1_5rev1_1.pdf>
 
 ## Definitions