Updated Bug report template a bit

[pvchupin]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Please describe the steps to reproduce the behavior:

1. Include code snippet as short as possible.
2. Specify command which should be used to compile the program
3. Specify the command which should be used to launch the program
4. Indicate what is wrong and what was expected

Environment (please complete the following information):

• OS: [e.g. Windows/Linux]
• DPC++ version: [e.g. commit hash or output of clang++ --version]
• Dependencies versions: [e.g. low-level runtime versions (like NEO)]

Additional context
Add any other context about the problem here.