[kernel] format Kconfig

Author: mysterywolf

src/Kconfig

@@ -3,7 +3,7 @@ menu "RT-Thread Kernel"
 
 config RT_NAME_MAX
     int "The maximal size of kernel object name"
-    range 1 64
+    range 2 64
     default 8
     help
         Each kernel object, such as thread, timer, semaphore etc, has a name,
@@ -18,6 +18,13 @@ config RT_USING_ARCH_DATA_TYPE
 
         Please re-define these data types in rtconfig_project.h file.
 
+config RT_USING_NANO
+    bool "Enable RT-Thread Nano"
+    default n
+    help
+        RT-Thread Nano is a very small size and refined hard real-time kernel,
+        which is suited for the extremely resource-constrained MCU system.
+
 config RT_USING_SMART
     bool "Enable RT-Thread Smart (microkernel on kernel/userland)"
     default n
@@ -43,13 +50,6 @@ config RT_USING_SMART
     help
         RT-Thread Smart is a microkernel based operating system on RT-Thread.
 
-config RT_USING_NANO
-    bool "Enable RT-Thread Nano"
-    default n
-    help
-        RT-Thread Nano with a very small size and refined hard real-time kernel,
-        which is very suited for the resource-constrained MCU system.
-
 config RT_USING_AMP
     bool "Enable AMP (Asymmetric Multi-Processing)"
     default n