[webapi] Fix incorrect suite name in Makefile

 Impacted tests(approved): new 0, update 0, delete 0
 Unit test platform: [Tizen IVI]
 Unit test result summary: pass 1, fail 137, block 1
Merge pull request #665 from Honry/Honry/webapi-vehicleinfo-Makefile

[webapi] Fix incorrect suite name in Makefile