Fix lots of typos in C comments and Kconfig help text

Documentation/NXGraphicsSubsystem.html

@@ -3263,7 +3263,7 @@ int nxf_convert_32bpp(FAR uint32_t *dest, uint16_t height,
       <dd>By default, NX builds to use a framebuffer driver (see <code>include/nuttx/video/fb.h</code>).
       If this option is defined, NX will build to use an LCD driver (see <code>include/nuttx/lcd/lcd.h</code>).
     <dt><code>CONFIG_NX_ANTIALIASING</code>:
-      <dd>Enable support for ant-aliasing when rendering lines as various
+      <dd>Enable support for anti-aliasing when rendering lines as various
       orientations.
       This option is only available for use with frame buffer drivers and
       only with 16-, 24-, or 32-bit RGB color formats.

Documentation/NuttShell.html

@@ -3329,7 +3329,7 @@ nsh>
 </p>
 
 <p>
-  There are several built-in appliations in the <code>apps/</code> repository.
+  There are several built-in applications in the <code>apps/</code> repository.
   No attempt is made here to enumerate all of them.
   But a few of the more common, useful built-in applications are listed below.
 </p>

Documentation/NuttX.html

@@ -3216,7 +3216,7 @@ nsh>
             <b>Olimexino-STM32</b>.
             This port uses the Olimexino STM32 board (STM32F103RBT6).
             See the http://www.olimex.com for further information.
-            Contribued by David Sidrane.
+            Contributed by David Sidrane.
          </p>
       </li>
     </ol>

Documentation/UsbTrace.html

@@ -100,7 +100,7 @@
 <ol>
   <li>8-bits of the trace ID (values associated with the above)</li>
   <li>8-bits of additional trace ID data, and</li>
-  <li>16-bits of additonal data.</li>
+  <li>16-bits of additional data.</li>
 </ol>
 <p><b>8-bit Trace Data</b>
   The 8-bit trace data depends on the specific event ID.  As examples,