Docs: Update link to FF-M v1.1 Extension

Also fix typo.

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: I4f976d65a71e98017ed2bb26ef351e74d31a446e
diff --git a/docs/design_docs/services/stateless_rot_service.rst b/docs/design_docs/services/stateless_rot_service.rst
index df3f29a..c84eb5f 100644
--- a/docs/design_docs/services/stateless_rot_service.rst
+++ b/docs/design_docs/services/stateless_rot_service.rst
@@ -223,8 +223,8 @@
 
 .. [1] `FF-M v1.0 Specification <https://developer.arm.com/documentation/den0063/latest/>`__
 
-.. [2] `FF-M v1.1 Extention <https://documentation-service.arm.com/static/600067c09b9c2d1bb22cd1c5?token=>`__
+.. [2] `FF-M v1.1 Extension <https://developer.arm.com/documentation/aes0039/latest/>`__
 
 --------------
 
-*Copyright (c) 2021, Arm Limited. All rights reserved.*
+*Copyright (c) 2021-2023, Arm Limited. All rights reserved.*
diff --git a/docs/integration_guide/spm_backends.rst b/docs/integration_guide/spm_backends.rst
index e690b36..8922705 100644
--- a/docs/integration_guide/spm_backends.rst
+++ b/docs/integration_guide/spm_backends.rst
@@ -89,8 +89,8 @@
 
 .. [1] `FF-M v1.0 Specification <https://developer.arm.com/documentation/den0063/latest/>`__
 
-.. [2] `FF-M v1.1 Extention <https://documentation-service.arm.com/static/600067c09b9c2d1bb22cd1c5?token=>`__
+.. [2] `FF-M v1.1 Extension <https://developer.arm.com/documentation/aes0039/latest/>`__
 
 --------------
 
-*Copyright (c) 2022, Arm Limited. All rights reserved.*
+*Copyright (c) 2022-2023, Arm Limited. All rights reserved.*
diff --git a/docs/integration_guide/tfm_secure_irq_integration_guide.rst b/docs/integration_guide/tfm_secure_irq_integration_guide.rst
index f01319e..73fdc2c 100644
--- a/docs/integration_guide/tfm_secure_irq_integration_guide.rst
+++ b/docs/integration_guide/tfm_secure_irq_integration_guide.rst
@@ -394,7 +394,7 @@
 
 .. [1] `FF-M v1.0 Specification <https://developer.arm.com/documentation/den0063/latest/>`__
 
-.. [2] `FF-M v1.1 Extention <https://documentation-service.arm.com/static/600067c09b9c2d1bb22cd1c5?token=>`__
+.. [2] `FF-M v1.1 Extension <https://developer.arm.com/documentation/aes0039/latest/>`__
 
 .. [3] https://git.trustedfirmware.org/TF-M/tf-m-tests.git/tree/tests_reg/test/secure_fw/suites/spm/irq/service/tfm_flih_test_service
 
@@ -402,6 +402,6 @@
 
 --------------
 
-*Copyright (c) 2021-2022, Arm Limited. All rights reserved.*
+*Copyright (c) 2021-2023, Arm Limited. All rights reserved.*
 *Copyright (c) 2022 Cypress Semiconductor Corporation (an Infineon company)
 or an affiliate of Cypress Semiconductor Corporation. All rights reserved.*