Update curl example

Get Sheets as Excel / CSV

Author: kbrandl

source/index.md.erb

@@ -4906,7 +4906,8 @@ Gets the Sheet specified in the URL. Returns the Sheet, including Rows, and opti
 ```shell
 curl https://api.smartsheet.com/2.0/sheets/{sheetId}?paperSize=A1 \
 -H "Authorization: Bearer ACCESS_TOKEN" \
--H "Accept: application/pdf" -o  output.pdf
+-H "Accept: application/pdf" 
+-o  output.pdf
 ```
 
 > Example Response: