Fixed bug in file injection regex
Fixed bug in file injection regex

dune73/owasp-modsecurity-crs,Ye-Yong-Chi/owasp-modsecurity-crs,dune73/owasp-modsecurity-crs,hqren/owasp-modsecurity-crs,sh0uw4ng/owasp-modsecurity-crs,wosl2001/owasp-modsecurity-crs,irtnog/owasp-modsecurity-crs,Ye-Yong-Chi/owasp-modsecurity-crs,sh0uw4ng/owasp-modsecurity-crs,Ye-Yong-Chi/owasp-modsecurity-crs,dune73/owasp-modsecurity-crs,irtnog/owasp-modsecurity-crs,sh0uw4ng/owasp-modsecurity-crs,sh0uw4ng/owasp-modsecurity-crs,dune73/owasp-modsecurity-crs,hqren/owasp-modsecurity-crs,wosl2001/owasp-modsecurity-crs,hqren/owasp-modsecurity-crs,wosl2001/owasp-modsecurity-crs,wosl2001/owasp-modsecurity-crs,Ye-Yong-Chi/owasp-modsecurity-crs,irtnog/owasp-modsecurity-crs,hqren/owasp-modsecurity-crs,irtnog/owasp-modsecurity-crs