Update to markdown

- Spellchecking
- Update plain text to github markdown

examples/mb851/shell-exec/README.markdown

@@ -3,44 +3,47 @@ ELFloader and shell command 'exec' example for MB851 (STM32W) platform
 
 Compiles the Contiki hello-world application as a Contiki executable (.ce).
 The Contiki executable is then uploaded to the MB851 platform via serial, and
-is stored in the filesystem.
-Finally, the executable is loaded via the shell command 'exec'.
- 
+is stored in the filesystem.  Finally, the executable is loaded via the shell
+command 'exec'.
+
 NOTE:
 You may have to reduce the ELF loader memory usage (/platform/sky/contiki-conf.h).
 Since hello-world uses very little memory:
 #define ELFLOADER_CONF_DATAMEMORY_SIZE 0x100
 #define ELFLOADER_CONF_TEXTMEMORY_SIZE 0x100
 
+1. Upload Sky shell with 'exec' command and symbols (requires several
+   recompilations to generate correct symbols):
 
-1. Upload Sky shell with 'exec' command and symbols (requires several recompilations to generate correct symbols):
-> make
-> make CORE=shell-exec-test.mb851
-> make shell-exec-test.flash CORE=shell-exec-test.mb851 PORT=AUTO
-
+    make
+    make CORE=shell-exec-test.mb851
+    make shell-exec-test.flash CORE=shell-exec-test.mb851 PORT=AUTO
 
 2. Verify access to the shell and the filesystem:
-> make login DEV=/dev/comX
-SHELL> echo hello shell
-SHELL> echo test | write mytest.txt
-SHELL> ls
-SHELL> read mytest.txt
-[CTRL-C] to exit the shell
 
+    > make login DEV=/dev/comX
+    SHELL> echo hello shell
+    SHELL> echo test | write mytest.txt
+    SHELL> ls
+    SHELL> read mytest.txt
+    [CTRL-C] to exit the shell
 
 3. Upload Contiki executable hello-world.ce:
-> make upload-executable DEV=/dev/comX
-[CTRL-C] to exit the shell when the entire file has been uploaded (after ~30 sec)
 
+    > make upload-executable DEV=/dev/comX
+    [CTRL-C] to exit the shell when the entire file has been uploaded (after ~30 sec)
 
 4. Verify that hello-world.ce exists in CFS:
-> make login DEV=/dev/comX
-SHELL> ls
-SHELL> read hello-world.ce | size
-The last command output should equal the size of hello-world.ce in this directory!
 
+    > make login DEV=/dev/comX
+    SHELL> ls
+    SHELL> read hello-world.ce | size
+
+The last command output should equal the size of hello-world.ce in this
+directory!
 
 5. Load and start hello world:
-SHELL> exec hello-world.ce
-The program should now start: the output 'Hello, World' appears.
 
+    SHELL> exec hello-world.ce
+
+The program should now start: the output 'Hello, World' appears.