"Reporting an issue" section is out of sync with actual github options

[skirpichev]

Current text:

devguide/triage/issue-tracker.rst

Lines 57 to 69 in 8fcb7a5

	First you need to select what kind of problem you want to report. The
	available choices are:
	* **Bug report**: an existing feature isn't working as expected;
	* **Documentation**: there is missing, invalid, or misleading documentation;
	* **Enhancement**: suggest a new feature for Python;
	* **Performance**: something should work faster;
	* **Security**: there is a specific kind of weakness open to exploitation
	through the points of vulnerability;
	* **Tests**: something is wrong with CPython's suite of regression tests;
	* **Discuss**: you'd like to learn more about Python, discuss ideas for
	possible changes to future Python versions, track core development
	discussions, or join a specific special-interest group.

Instead we have available:

• Bug report
• Crash report
• Documentation
• Feature or enhancement
• Report a security vulnerability
• Getting help
• Proposing new features

Last two point to d.p.o.

I'm not sure if devguide should list all available options, rather ones that always be present and/or relevant for following text. Say:

 First you need to select what kind of problem you want to report. The 
 available choices include, for example: 
  
 * **Bug report**: an existing feature isn't working as expected; 
 * **Documentation**: there is missing, invalid, or misleading documentation; 
 * **Feature or enhancement**: suggest a new feature for Python;