Add periods after list items

Author: theotherjimmy

docs/advanced/mbed_targets.md

@@ -119,24 +119,24 @@ When you use target inheritance, you may alter the values of `extra_labels` usin
 ### `features`, `features_add` and `features_remove`
 
 The list of _features_ enables software features on a platform. Like `extra_labels`, `features` makes the build system aware of additional directories it must scan for resources. Unlike `extra_labels`, the build system recognizes a fixed set of values in the `features` list. The build system recognizes the following features:
- - `UVISOR`
- - `BLE`
- - `CLIENT`
- - `IPV4`
- - `LWIP`
- - `COMMON_PAL`
- - `STORAGE`
- - `NANOSTACK`
+ - `UVISOR`.
+ - `BLE`.
+ - `CLIENT`.
+ - `IPV4`.
+ - `LWIP`.
+ - `COMMON_PAL`.
+ - `STORAGE`.
+ - `NANOSTACK`.
 
 The following features, also recognized by the build system, are all nanostack configurations:
- - `LOWPAN_BORDER_ROUTER`
- - `LOWPAN_HOST`
- - `LOWPAN_ROUTER`
- - `NANOSTACK_FULL`
- - `THREAD_BORDER_ROUTER`
- - `THREAD_END_DEVICE`
- - `THREAD_ROUTER`
- - `ETHERNET_HOST`
+ - `LOWPAN_BORDER_ROUTER`.
+ - `LOWPAN_HOST`.
+ - `LOWPAN_ROUTER`.
+ - `NANOSTACK_FULL`.
+ - `THREAD_BORDER_ROUTER`.
+ - `THREAD_END_DEVICE`.
+ - `THREAD_ROUTER`.
+ - `ETHERNET_HOST`.
 
 The build system errors when you use features outside of this list.