docs(measured-boot): fix few typos

Fixed few typos in the measured boot POC document.

Change-Id: I122c069bbde51febed12c54e2c4a4985b009ef5f
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
diff --git a/docs/design_documents/measured_boot_poc.rst b/docs/design_documents/measured_boot_poc.rst
index 3ae539b..2e25057 100644
--- a/docs/design_documents/measured_boot_poc.rst
+++ b/docs/design_documents/measured_boot_poc.rst
@@ -6,7 +6,7 @@
 security state can be attested later.
 
 The current implementation of the driver included in Trusted Firmware-A
-(TF-A) stores the measurements into a `TGC event log`_ in secure
+(TF-A) stores the measurements into a `TCG event log`_ in secure
 memory. No other means of recording measurements (such as a discrete TPM) is
 supported right now.
 
@@ -24,7 +24,7 @@
    platforms might have different needs and configurations (e.g. different
    SHA algorithms) and they might also use different types of TPM services
    (or even a different type of service to provide the attestation)
-   and therefore the instuctions given here might not apply in such scenarios.
+   and therefore the instructions given here might not apply in such scenarios.
 
 Components
 ~~~~~~~~~~
@@ -497,11 +497,11 @@
 
 --------------
 
-*Copyright (c) 2021, Arm Limited. All rights reserved.*
+*Copyright (c) 2021-2023, Arm Limited. All rights reserved.*
 
 .. _OP-TEE Toolkit: https://github.com/OP-TEE/build
 .. _ms-tpm-20-ref: https://github.com/microsoft/ms-tpm-20-ref
 .. _Get and build the solution: https://optee.readthedocs.io/en/latest/building/gits/build.html#get-and-build-the-solution
 .. _Armv8-A Foundation Platform (For Linux Hosts Only): https://developer.arm.com/tools-and-software/simulation-models/fixed-virtual-platforms/arm-ecosystem-models
 .. _tpm2-tools: https://github.com/tpm2-software/tpm2-tools
-.. _TGC event log: https://trustedcomputinggroup.org/resource/tcg-efi-platform-specification/
+.. _TCG event log: https://trustedcomputinggroup.org/resource/tcg-efi-platform-specification/