Fix space handling in Golang configure-baseline scripts

[smowton]

I noticed in integration tests we were seeing

Initializing database at /Users/mbg/Code/GitHub/codeql/semmle-code/target/codeql-go-integration-tests/ql/go/ql/integration-tests/all-platforms/go/diagnostics/newer-go-version-needed/test-db.
cat: /Users/mbg/Code/GitHub/codeql/semmle-code/target/intree/codeql: No such file or directory
cat: integration: No such file or directory
cat: tests: No such file or directory
cat: dist: No such file or directory
cat: go/go/tools/baseline-config-empty.json: No such file or directory
Failed to run the configure-baseline script for Go. Proceeding with no baseline configuration, baseline information for Go may be degraded as a result.

[mbg]

🚀