docs: Fix a few typos (#606)

* docs: Fix a few typos

There are small typos in:
- doc/versioning.md
- src/components/ble/NimbleController.cpp
- src/libs/mynewt-nimble/CODING_STANDARDS.md
- src/libs/mynewt-nimble/docs/btshell/btshell_GAP.rst
- src/systemtask/SystemTask.cpp

Fixes:
- Should read `milliseconds` rather than `miliseconds`.
- Should read `unnecessary` rather than `uncesseray`.
- Should read `target` rather than `tharget`.
- Should read `project` rather than `projct`.
- Should read `preferred` rather than `prefered`.
- Should read `functioning` rather than `functionning`.
- Should read `forever` rather than `forver`.
- Should read `existing` rather than `exisiting`.

Author: timgates42

cmake-nRF5x/readme.md

@@ -98,7 +98,7 @@ The script makes use of the following tools:
 
 After setup you can use cmake as usual:
 
-1. Generate the actual build files (out-of-source builds are strongly recomended):
+1. Generate the actual build files (out-of-source builds are strongly recommended):
 
 	```commandline
 	cmake -H. -B"cmake-build" -G "Unix Makefiles"

doc/versioning.md

@@ -3,4 +3,4 @@ The versioning of this project is based on [Semantic versionning](https://semver
 
  - The **patch** is incremented when we fix a bug on a **released** version (most of the time using a **hotfix** branch).
  - The **minor** is incremented when we release a new version with new features. It corresponds to a merge of **develop** into **master**.
- - The **major** should be incremented when a breaking change is made to the application. We still have to define what is a breaking change in the context of this project. For now, I suggest that it stays **0** until we have a fully functionning firmware suited for the final user.
+ - The **major** should be incremented when a breaking change is made to the application. We still have to define what is a breaking change in the context of this project. For now, I suggest that it stays **0** until we have a fully functioning firmware suited for the final user.

src/components/ble/NimbleController.cpp

@@ -126,7 +126,7 @@ void NimbleController::StartAdvertising() {
   //  ASSERT(res == 0);// TODO I've disabled these ASSERT as they sometime asserts and reset the mcu.
   // For now, the advertising is restarted as soon as it ends. There may be a race condition
   // that prevent the advertising from restarting reliably.
-  // I remove the assert to prevent this uncesseray crash, but in the long term, the management of
+  // I remove the assert to prevent this unnecessary crash, but in the long term, the management of
   // the advertising should be improve (better error handling, and advertise for 3 minutes after
   // the application has been woken up, for example.
 }

src/systemtask/SystemTask.cpp

@@ -350,7 +350,7 @@ void SystemTask::Work() {
       if (bleDiscoveryTimer == 0) {
         isBleDiscoveryTimerRunning = false;
         // Services discovery is deffered from 3 seconds to avoid the conflicts between the host communicating with the
-        // tharget and vice-versa. I'm not sure if this is the right way to handle this...
+        // target and vice-versa. I'm not sure if this is the right way to handle this...
         nimbleController.StartDiscovery();
       } else {
         bleDiscoveryTimer--;