Doc: Update Musca-B1 links

Change-Id: I0bcfb693b9e694141ef37f2ffca7a9a7bc300ac5
Signed-off-by: Gabor Abonyi <gabor.abonyi@arm.com>
diff --git a/docs/platform/platform_introduction.rst b/docs/platform/platform_introduction.rst
index 1e215e9..8ece895 100644
--- a/docs/platform/platform_introduction.rst
+++ b/docs/platform/platform_introduction.rst
@@ -24,7 +24,7 @@
         - `Fast model FVP_MPS2_AEMv8M (AN521).
           <https://developer.arm.com/products/system-design/fixed-virtual-platforms>`_
         - `Musca-B1 test chip board.
-          <https://developer.arm.com/products/system-design/development-boards/iot-test-chips-and-boards/musca-b-test-chip-board>`_
+          <https://developer.arm.com/Tools%20and%20Software/Musca-B1%20Test%20Chip%20Board>`_
         - `Musca-S1 test chip board.
           <https://developer.arm.com/tools-and-software/development-boards/iot-test-chips-and-boards/musca-s1-test-chip-board>`_
         - `FPGA image loaded on MPS3 board (AN524).