maint: Add alt text and a period to other alt text. Apparently ahrefs doesn't like alt="" to indicate an image that doesn't need to be announce to screenreaders and other assistive devices 8-(.

try:
    # Python 3+
    from ssl import SSLError
except (ImportError, AttributeError):
    # Python 2.5-2.7
    from socket import sslerror as SSLError