Docs: Update 'glossary' with minor changes

Add SPRT and SPRTL into the glossary.
And minor update on the term 'Secure Function'.
Fix format error on 'V8M-Specific'.

Change-Id: I7d3ede1bcdba82dec539642045904a2584a70396
Signed-off-by: Ken Liu <ken.liu@arm.com>
diff --git a/docs/glossary.rst b/docs/glossary.rst
index ef39f2c..f25d9cd 100644
--- a/docs/glossary.rst
+++ b/docs/glossary.rst
@@ -6,84 +6,93 @@
 TF-M related
 ************
 .. glossary::
-    
-    TF-M
+
     TFM
+    TF-M
+    Trusted Firmware - M
     Trusted Firmware for M-class
         ARM TF-M provides a reference implementation of secure world software for ARMv8-M.
-    
+
     SPE : TF-M related
     Secure Processing Environment
-        PSA term. In TF-M this means the secure domain protected by TF-M
-    
+        PSA term. In TF-M this means the secure domain protected by TF-M.
+
     NSPE : TF-M related
     Non Secure Processing Enviroment
-        PSA term. In TF-M this means non secure domain typically running an OS using services provided by TF-M
-    
+        PSA term. In TF-M this means non secure domain typically running an OS using services provided by TF-M.
+
     SS : TF-M related
     Secure Service
-        A component within the TEE that is atomic from a security/trust point of view, i.e. which is viewed as a single entity from a TF-M point of view
-    
+        A component within the TEE that is atomic from a security/trust point of view, i.e. which is viewed as a single entity from a TF-M point of view.
+
     SP : TF-M related
     Secure Partition
-        A logical container for a single secure service
-    
+        A logical container for secure services.
+
     SPM : TF-M related
     Secure Partition Manager
-        The TF-M component responsible for enumeration, management and isolation of multiple Secure Partitions within the TEE
-    
+        The TF-M component responsible for enumeration, management and isolation of multiple Secure Partitions within the TEE.
+
+    SPRT : TF-M related
+    Secure Partition Runtime
+        The TF-M component responsible for Secure Partition runtime functionalities.
+
+    SPRTL : TF-M related
+    Secure Partition Runtime Library
+        A library contains the SPRT code and data.
+
     SFN : TF-M related
     Secure Function
-        An entry function to a secure service. Multiple SFN per SS are permitted
-    
+        The function entry to a secure service. Multiple SFN per SS are permitted.
+
     SST : TF-M related
     Secure Storage Service
-        Secure storage service provided by TF-M
+        Secure storage service provided by TF-M.
 
 ****************
 SSE-200 platform
 ****************
 .. glossary::
-    
+
     MPC : SSE-200 platform
     Memory Protection Controller
-        Bus slave-side security controller for memory regions
-    
+        Bus slave-side security controller for memory regions.
+
     PPC : SSE-200 platform
     Peripheral Protection Controller
-        Bus slave-side security controller for peripheral access
+        Bus slave-side security controller for peripheral access.
 
 ************
 v8M-specific
 ************
 .. glossary::
-    
-   SSE-200 platform
-   Secure/Non-secure
-        The separation provided by TrustZone hardware components in the system
-    
-    SAU
+
+    S/NS : v8M-specific
+    Secure/Non-secure
+        The separation provided by TrustZone hardware components in the system.
+
+    SAU : v8M-specific
     Secure Attribution Unit
-        Hardware component providing isolation between Secure, Non-secure Callable and Non-secure addresses
+        Hardware component providing isolation between Secure, Non-secure Callable and Non-secure addresses.
 
 
 ***************
 M-class Generic
 ***************
 .. glossary::
-    
-    APCS
+
+    AAPCS
     ARM Architecture Procedure Call Standard
         The AAPCS defines how subroutines can be separately written, separately compiled, and separately assembled to work together. It describes a contract between a calling routine and a called routine
-    
+
     SVC
     SuperVisor Call
         ARMv7M assembly instruction to call a privileged handler function
-    
-    MPU
+
+    MPU : M-class Generic
     Memory Protection Unit
-        Hardware component providing privilege control
+        Hardware component providing privilege control.
 
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-*Copyright (c) 2017-2019, Arm Limited. All rights reserved.*
+*Copyright (c) 2017-2020, Arm Limited. All rights reserved.*