fix: change sqr_sum udf name to l2norm

tests/script/sh/compile_udf.sh

@@ -4,7 +4,7 @@ rm -rf /tmp/udf/libbitand.so /tmp/udf/libsqrsum.so
 mkdir -p /tmp/udf
 echo "compile udf bit_and and sqr_sum"
 gcc -fPIC -shared sh/bit_and.c -I../../include/libs/function/ -I../../include/client -I../../include/util   -o /tmp/udf/libbitand.so
-gcc -fPIC -shared sh/sqr_sum.c -I../../include/libs/function/ -I../../include/client -I../../include/util   -o /tmp/udf/libl2norm.so
+gcc -fPIC -shared sh/l2norm.c -I../../include/libs/function/ -I../../include/client -I../../include/util   -o /tmp/udf/libl2norm.so
 echo "debug show /tmp/udf/*.so"
 ls /tmp/udf/*.so