local 拼写错误导致 CMake 错误

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
SOCI_INCLUDE_DIRS
   used as include directory in directory /opt/avrouter/proto_doc
   used as include directory in directory /opt/avrouter/src
Merge pull request #2 from mrshelly/master

local 拼写错误导致 CMake 错误