chore: specify where to run npx react-native info for bug reports (#2314)

the "info" command is not known to the react-native wrapper on
npmjs.com so "info" only works if you run it from inside a directory where react-native is installed as a local package

Author: mikehardy

.github/ISSUE_TEMPLATE/bug_report.md

@@ -7,7 +7,8 @@ labels: 'bug report'
 ## Environment
 
 <!-- 
-  Run `npx react-native info` in your terminal and paste its contents here. 
+  Run `npx react-native info` in your terminal inside a react-native project 
+  and paste its contents here. 
   Also please make sure that `npx react-native doctor` is passing.
 -->