Fix a sed command

OBS-URL: https://build.opensuse.org/package/show/science/python-PyCBC?expand=0&rev=3

python-PyCBC.spec

@@ -46,7 +46,7 @@ of detected sources.
 %setup -q -n PyCBC-%{version}
 
 # FOR REAL BINARIES SET HASHBANG TO PYTHON3 DIRECTLY
-sed -E -i "1{s|^#\!\s*/usr/bin/env python|#\!/usr/bin/python3}|}" \
+sed -E -i "1{s|^#\!\s*/usr/bin/env python|#\!/usr/bin/python3|}" \
   bin/pycbc_* \
   bin/*/pycbc_*