Fault handler doc update

Author: SenRamakri

docs/tutorials/debug/debug_fault_exception.md

@@ -15,7 +15,8 @@ Please look at the **Technical Reference Manual** and **Arm Architecture Referen
 
 For example, Cortex-M0/M0+ processors (or any ARMv6M processors) do not have MemManage, BusFault and UsageFault exceptions implemented. In those cases, all exceptions are reported as HardFault exception. For ARMv7M processors, MemManage, BusFault and UsageFault exceptions trigger only if they are enabled in System Handler Control and State Register (**SHCSR**). 
 
-Below is an example of the crash dump (with a description of registers) that the Mbed OS fault exception handler generates.
+Below is an example of the crash dump (with a description of registers) that the Mbed OS fault exception handler generates. Note that the system also invokes Mbed-OS error handler when an exception happens, and prints out the error info as well.
+See [Error](https://os.mbed.com/docs/latest/apis/error-handling.html) documentation for more info on error info. 
 
 ```
 ++ MbedOS Fault Handler ++
@@ -54,18 +55,18 @@ Mode : Thread       - Processor mode at the time of exception
 Priv : Privileged   - Privilege level at the time of exception
 Stack: PSP          - Stack pointer in use at the time of exception
 
-Thread Info:
-Current:
-State: 00000002 EntryFn: 00002595 Stack Size: 00001000 Mem: 20001EA0 SP: 20002E60
-Next:
-State: 00000002 EntryFn: 00002595 Stack Size: 00001000 Mem: 20001EA0 SP: 20002E60
-Wait Threads:
-State: 00000083 EntryFn: 00004205 Stack Size: 00000300 Mem: 20000E18 SP: 200010B0
-Delay Threads:
-Idle Thread:
-State: 00000001 EntryFn: 00002715 Stack Size: 00000200 Mem: 20001118 SP: 200012D8
-
 -- MbedOS Fault Handler --
+
+
+++ MbedOS Error Info ++
+Error Status: 0x80FF013D Code: 317 Module: 255
+Error Message: Fault exception
+Location: 0x5B25
+Error Value: 0x5946
+Current Thread: Id: 0x20001E80 Entry: 0x5D05 StackSize: 0x1000 StackMem: 0x20000E80 SP: 0x2002FF90
+For more info, visit: https://armmbed.github.io/mbedos-error/?error=0x80FF013D
+-- MbedOS Error Info --
+
 ```
 
 ### Analyzing crash dump