Fixed whitespace

Whitespace inconsistencies reported in https://github.com/libsdl-org/SDL/pull/5673

build-scripts/update-copyright.sh

@@ -1,8 +1,7 @@
 #!/bin/sh
 
-find . -type f -exec grep -Il "Copyright" {} \;     \
-| grep -v \.git                             \
-| while read file;                            \
-do \
-  LC_ALL=C sed -b -i "s/\(.*Copyright.*\)[0-9]\{4\}\( *Sam Lantinga\)/\1`date +%Y`\2/" "$file"; \
+find . -type f -exec grep -Il "Copyright" {} \; \
+| grep -v \.git                                 \
+| while read file; do                           \
+    LC_ALL=C sed -b -i "s/\(.*Copyright.*\)[0-9]\{4\}\( *Sam Lantinga\)/\1`date +%Y`\2/" "$file"; \
 done