Update branding from mbed to Mbed in hashing/README.md

Author: Andres Amaya Garcia

hashing/README.md

@@ -1,12 +1,12 @@
-# SHA-256 Hash example on mbed OS
+# SHA-256 Hash example on Mbed OS
 
-This application performs hashing of a buffer with SHA-256 using various APIs. It serves as a tutorial for the basic hashing APIs of mbed TLS.
+This application performs hashing of a buffer with SHA-256 using various APIs. It serves as a tutorial for the basic hashing APIs of Mbed TLS.
 
 ## Getting started
 
 Set up your environment if you have not done so already. For instructions, refer to the [main readme](../README.md).
 
-You can also compile this example with the [mbed Online Compiler](https://os.mbed.com/compiler/) by using [this project](https://os.mbed.com/teams/mbed-os-examples/code/mbed-os-example-tls-hashing).
+You can also compile this example with the [Mbed Online Compiler](https://os.mbed.com/compiler/) by using [this project](https://os.mbed.com/teams/mbed-os-examples/code/mbed-os-example-tls-hashing).
 
 ## Monitoring the application