Fix documentation.

* Fix broken link "building-for-different-ethos_u-npu-variants"
* Corstone-300 + Ethos-U65 NPU support in memory_considerations

Signed-off-by: Isabella Gottardi <isabella.gottardi@arm.com>
Change-Id: I2e99e2d24d3cd0bb64e06481862660d1b0679f20
diff --git a/source/application/hal/platforms/bare-metal/bsp/mem_layout/simple_platform.sct b/source/application/hal/platforms/bare-metal/bsp/mem_layout/simple_platform.sct
index deb4214..0c6a388 100644
--- a/source/application/hal/platforms/bare-metal/bsp/mem_layout/simple_platform.sct
+++ b/source/application/hal/platforms/bare-metal/bsp/mem_layout/simple_platform.sct
@@ -59,7 +59,7 @@
     ; SSE-300's internal SRAM of 4MiB - reserved for
     ; activation buffers.
     ; This region should have 3 cycle read latency from
-    ; both Cortex-M55 and Ethos-U55
+    ; both Cortex-M55 and Ethos-U NPU
     ;-----------------------------------------------------
     isram.bin       0x31000000  UNINIT ALIGN 16 0x00400000
     {