[ML] Change brace placement in shell scripts (#83)

This changes brace placement for functions in shell scripts to
match the style that was introduced for the C++ code in #15.

Author: David Roberts

dev-tools/docker_build.sh

@@ -14,8 +14,7 @@
 #
 # Finally, the Docker container used for the build is deleted.
 
-usage()
-{
+usage() {
     echo "Usage: $0 linux|linux-musl|macosx ..."
     exit 1
 }

dev-tools/docker_test.sh

@@ -14,8 +14,7 @@
 #
 # Finally, the Docker container used for the build/test is deleted.
 
-usage()
-{
+usage() {
     echo "Usage: $0 linux ..."
     exit 1
 }