freertos(IDF): Sync cosmetic differences to v10.4.3

This commit synchronize the cosmetic differences of IDF FreeRTOS to upstream
Vanilla v10.4.3. Comsetic differences include:

- Out of date doxygen API descriptions
  - Misnamed parameters
  - Missing examples
  - Fixed/added missing @cond/@code directives
- Extra/missing comments/lines
- Code formatting (uncrustify)

Other changes:

- Some ESP_PLATFORM directives were also removed
- xTaskIncrementTickOtherCores() now depends on "configNUM_CORES > 1"
- Updated some multi-core dummy variable names in FreeRTOS.h

components/freertos/FreeRTOS-Kernel/include/freertos/timers.h

@@ -147,9 +147,9 @@ typedef void (* PendedFunction_t)( void *,
  * which is "void vCallbackFunction( TimerHandle_t xTimer );".
  *
  * @return If the timer is successfully created then a handle to the newly
- * created timer is returned.  If the timer cannot be created (because either
- * there is insufficient FreeRTOS heap remaining to allocate the timer
- * structures, or the timer period was set to 0) then NULL is returned.
+ * created timer is returned.  If the timer cannot be created because there is
+ * insufficient FreeRTOS heap remaining to allocate the timer
+ * structures then NULL is returned.
  *
  * Example usage:
  * @verbatim