correct the spelling of platform in installer
correct the spelling of platform in installer

Akpotohwo/node-ibm_db,Akpotohwo/node-ibm_db,qpresley/node-ibm_db,qpresley/node-ibm_db,ibmdb/node-ibm_db,ibmdb/node-ibm_db,Akpotohwo/node-ibm_db,Akpotohwo/node-ibm_db,ibmdb/node-ibm_db,qpresley/node-ibm_db,Akpotohwo/node-ibm_db,qpresley/node-ibm_db,ibmdb/node-ibm_db,Akpotohwo/node-ibm_db,qpresley/node-ibm_db,qpresley/node-ibm_db,ibmdb/node-ibm_db,ibmdb/node-ibm_db