Fix incorrect rendering of stream_to_gsheet.html docs (#1087)

Author: khyatimahendru

docs/tools/stream_to_gsheet.md

@@ -95,15 +95,17 @@ Google Sheet. Each line of output will be written to a new row in the sheet.
 We have already integrated the `stream_to_gsheets` utility in `bin/registrar`. 
 It can be used with other tools similarly.
 
-* Define the link to the spreadsheet in your site model's site_metadata.json
-  file under the key `sheet`
-```json lines
-// site_model/site_metadata.json
+* Define the link to the spreadsheet in your site model's `site_metadata.json`
+  file under the key `sheet`.
+  
+```json
 {
   "sheet": "https://docs.google.com/spreadsheets/d/YOUR_SPREADSHEET_ID"
 }
 ```
+
 * In the tool script, add the required commands:
+
 ```shell
 source $UDMI_ROOT/etc/shell_common.sh
 
@@ -128,4 +130,4 @@ if [[ $spreadsheet != "null" && -n "$spreadsheet" ]]; then
 else
   $cmd 2>&1 | tee $OUT_DIR/$util_name.log
 fi
-```
+```