fix(smstudio): Swap wget->curl in copy_s3_content

Recently I've been observing wget fails in SMStudio as per:
aws/sagemaker-distribution#435 - so to get
fmbench debugged successfully in this environment I had to swap out
wget for curl calls in the `copy_s3_content` script.

copy_s3_content.sh

@@ -13,14 +13,12 @@ mkdir -p $FMBENCH_READ_DIR/tokenizer
 mkdir -p $FMBENCH_READ_DIR/llama2_tokenizer
 mkdir -p $FMBENCH_READ_DIR/llama3_tokenizer
 mkdir -p $FMBENCH_READ_DIR/mistral_tokenizer
-wget https://${BUCKET}.s3.amazonaws.com/artifacts/ML-FMBT/manifest.txt -P ${FMBENCH_READ_DIR}/
+curl --output-dir ${FMBENCH_READ_DIR}/ -O https://${BUCKET}.s3.amazonaws.com/artifacts/ML-FMBT/manifest.txt
 
 # copy each file of the public content for FMBench
 for i in `cat ${FMBENCH_READ_DIR}/manifest.txt`
 do
   dir_path=`dirname $i`
   mkdir -p ${FMBENCH_READ_DIR}/$dir_path
-  wget https://${BUCKET}.s3.amazonaws.com/artifacts/ML-FMBT/$i -P ${FMBENCH_READ_DIR}/$dir_path
+  curl --output-dir ${FMBENCH_READ_DIR}/$dir_path -O https://${BUCKET}.s3.amazonaws.com/artifacts/ML-FMBT/$i
 done
-
-