Squashed 'features/FEATURE_COMMON_PAL/mbed-trace/' changes from b731d95..6d3590f

6d3590f Fix broken URL to config system documentation in README (#78)

git-subtree-dir: features/FEATURE_COMMON_PAL/mbed-trace
git-subtree-split: 6d3590f08853892373cb479cc141002d48561fd8

Author: Arto Kinnunen

README.md

@@ -76,7 +76,7 @@ To do so, add the following to your mbed_app.json:
 
 Don't forget to fulfill the other [prerequisites](#prerequisites)!
 
-([Click here for more information on the configuration system](https://github.com/ARMmbed/mbed-os/blob/master/docs/config_system.md))
+([Click here for more information on the configuration system](https://docs.mbed.com/docs/mbed-os-api/en/latest/config_system/))
 
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