doc: Fixed notes formatting
Fixed the style used to format notes.
Signed-off-by: Francesco Servidio <francesco.servidio@nordicsemi.no>
diff --git a/docs/PORTING.md b/docs/PORTING.md
index dd67ffb..d69a965 100644
--- a/docs/PORTING.md
+++ b/docs/PORTING.md
@@ -168,7 +168,12 @@
int flash_area_id_to_multi_image_slot(int image_index, int area_id);
```
-**Note:** As of writing, it is possible that MCUboot will open a flash area multiple times simultaneously (through nested calls to `flash_area_open`). As a result, MCUboot may call `flash_area_close` on a flash area that is still opened by another part of MCUboot. As a workaround when porting, it may be necessary to implement a counter of the number of times a given flash area has been opened by MCUboot. The `flash_area_close` implementation should only fully deinitialize the underlying flash area when the open counter is decremented to 0. See [this GitHub PR](https://github.com/mcu-tools/mcuboot/pull/894/) for a more detailed discussion.
+---
+***Note***
+
+*As of writing, it is possible that MCUboot will open a flash area multiple times simultaneously (through nested calls to `flash_area_open`). As a result, MCUboot may call `flash_area_close` on a flash area that is still opened by another part of MCUboot. As a workaround when porting, it may be necessary to implement a counter of the number of times a given flash area has been opened by MCUboot. The `flash_area_close` implementation should only fully deinitialize the underlying flash area when the open counter is decremented to 0. See [this GitHub PR](https://github.com/mcu-tools/mcuboot/pull/894/) for a more detailed discussion.*
+
+---
## Memory management for Mbed TLS