Rui Chen c832e2a771 Fix 'code-block' tag format issues
Modify 'code-block' tag format so that the following python code
could be showed exactly, and reformat the more than 79 chars of lines.

Change-Id: Ic6721e4cc8f4c7a3e4a7c7dbd63d9089180cdc33
2016-03-01 08:48:47 +00:00
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