Docs: Consistently refer to Musca-A

Updates documents to consistently refer to Musca-A, rather than using a
mix of Musca-A and Musca-A1.

Change-Id: I6f7a9e6afe3475b4a88200f6e56bf4c5507850e4
Signed-off-by: Jamie Fox <jamie.fox@arm.com>
diff --git a/docs/user_guides/tfm_integration_guide.rst b/docs/user_guides/tfm_integration_guide.rst
index 41f10ed..30e2771 100644
--- a/docs/user_guides/tfm_integration_guide.rst
+++ b/docs/user_guides/tfm_integration_guide.rst
@@ -21,7 +21,7 @@
 
 - Soft Macro Model (SMM) Cortex-M33 SSE-200 subsystem for MPS2+ (AN521)
 - Cortex-M23 IoT Kit subsystem for MPS2+ (AN519)
-- Musca-A1 test chip board (Cortex-M33 SSE-200 subsystem)
+- Musca-A test chip board (Cortex-M33 SSE-200 subsystem)
 - Musca-B1 test chip board (Cortex-M33 SSE-200 subsystem)
 
 The files related to the supported platforms are contained under the
@@ -33,7 +33,7 @@
 More information about subsystems supported by the MPS2+ board can be found in:
 `MPS2+ homepage <https://developer.arm.com/products/system-design/development-boards/fpga-prototyping-boards/mps2>`__
 
-More information about the Musca-A1 test chip board can be found in:
+More information about the Musca-A test chip board can be found in:
 `Musca-A homepage <https://developer.arm.com/products/system-design/development-boards/iot-test-chips-and-boards/musca-a-test-chip-board>`__
 
 More information about the Musca-B1 test chip board can be found in: