fix typo in build script (#247)

Author: srliao

scripts/build.sh

@@ -5,7 +5,7 @@
 
 # notice how we avoid spaces in $now to avoid quotation hell in go build command
 now=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
-GOOS=windows GOARCH=amd64 go build -ldflags "-X main.sha1ver=`git rev-parse HEAD` -X main.buildTime=$now -X main.release=`git tag --sort=-version:refname | head -n 1`" -o srsim_windows_amd64.exe ./cmd/srsim
-GOOS=darwin GOARCH=arm64 go build -ldflags "-X main.sha1ver=`git rev-parse HEAD` -X main.buildTime=$now -X main.release=`git tag --sort=-version:refname | head -n 1`" -o srsim_darwin_arm64 ./cmd/srsim 
-GOOS=darwin GOARCH=amd64 go build -ldflags "-X main.sha1ver=`git rev-parse HEAD` -X main.buildTime=$now -X main.release=`git tag --sort=-version:refname | head -n 1`" -o srsim_darwin_amd64 ./cmd/srsim 
-GOOS=linux GOARCH=amd64 go build -ldflags "-X main.sha1ver=`git rev-parse HEAD` -X main.buildTime=$now -X main.release=`git tag --sort=-version:refname | head -n 1`" -o srsim_linux_amd64 ./cmd/srsim 
+GOOS=windows GOARCH=amd64 go build -ldflags "-X main.sha1ver=`git rev-parse HEAD` -X main.buildTime=$now -X main.version=`git tag --sort=-version:refname | head -n 1`" -o srsim_windows_amd64.exe ./cmd/srsim
+GOOS=darwin GOARCH=arm64 go build -ldflags "-X main.sha1ver=`git rev-parse HEAD` -X main.buildTime=$now -X main.version=`git tag --sort=-version:refname | head -n 1`" -o srsim_darwin_arm64 ./cmd/srsim 
+GOOS=darwin GOARCH=amd64 go build -ldflags "-X main.sha1ver=`git rev-parse HEAD` -X main.buildTime=$now -X main.version=`git tag --sort=-version:refname | head -n 1`" -o srsim_darwin_amd64 ./cmd/srsim 
+GOOS=linux GOARCH=amd64 go build -ldflags "-X main.sha1ver=`git rev-parse HEAD` -X main.buildTime=$now -X main.version=`git tag --sort=-version:refname | head -n 1`" -o srsim_linux_amd64 ./cmd/srsim