Fix badges, syntax is reStructuredText, not Markdown
Fix badges, syntax is reStructuredText, not Markdown

plusvic/yara-python,VirusTotal/yara-python,grrrrrrrrr/yara-python,grrrrrrrrr/yara-python,wxsBSD/yara-python,VirusTotal/yara-python,plusvic/yara-python,wxsBSD/yara-python