Fix ids for field blocks.
Fix ids for field blocks.

twodee/blockly,LLK/scratch-blocks,hkoi/blockly,mark-friedman/blockly,jstnhuang/blockly,daarond/blockly,trodi/blockly,markocelan/blockly-minecraft,griffpatch/scratch-blocks,google/blockly,jstnhuang/blockly,dhalupa/blockly,lzairdking/blockly,google/blockly-devtools,LLK/scratch-blocks,jano42/blockly,lzairdking/blockly,gengshenghong/scratch-blocks,carlosperate/blockly,mark-friedman/blockly,twodee/blockly,rachel-fenichel/blockly,markocelan/blockly-minecraft,picklesrus/blockly,aravart/speech-blocks,rachel-fenichel/blockly,nickmain/blockly,daarond/blockly,lzairdking/blockly,InspectorWidget/blockly,nickmain/blockly,google/blockly,rachel-fenichel/blockly,LLK/scratch-blocks,carlosperate/blockly,dhalupa/blockly,twodee/blockly,griffpatch/scratch-blocks,aravart/speech-blocks,trodi/blockly,google/blockly,joshlory/blockly,sclements/scratch-blocks,groklearning/blockly,groklearning/blockly,twodee/blockly,LLK/scratch-blocks,griffpatch/scratch-blocks,mark-friedman/blockly,griffpatch/scratch-blocks,hkoi/blockly,google/blockly,groklearning/blockly,dhalupa/blockly,trinketapp/blockly,jano42/blockly,carlosperate/blockly,google/blockly,griffpatch/scratch-blocks,gengshenghong/scratch-blocks,jano42/blockly,InspectorWidget/blockly,google/blockly-devtools,hkoi/blockly,mark-friedman/blockly,nickmain/blockly,carlosperate/blockly,rachel-fenichel/blockly,rachel-fenichel/blockly,sclements/scratch-blocks,google/blockly,mark-friedman/blockly,markocelan/blockly-minecraft,trinketapp/blockly,trodi/blockly,jano42/blockly,trodi/blockly,LLK/scratch-blocks,markocelan/blockly-minecraft,nickmain/blockly,groklearning/blockly,nickmain/blockly,sclements/scratch-blocks,jstnhuang/blockly,gengshenghong/scratch-blocks,trinketapp/blockly,rachel-fenichel/blockly,joshlory/blockly,mark-friedman/blockly,InspectorWidget/blockly,twodee/blockly,lzairdking/blockly,gengshenghong/scratch-blocks,picklesrus/blockly,picklesrus/blockly,trinketapp/blockly,joshlory/blockly,sclements/scratch-blocks,twodee/blockly,nickmain/blockly,sclements/scratch-blocks,daarond/blockly,google/blockly,gengshenghong/scratch-blocks,jstnhuang/blockly,rachel-fenichel/blockly