Clarify white space requirements for inline images using ASCII~ filters

[MPBailey]

In 8.9.7 Inline images is inconsistent between the text in the 1st para after Table 90: “Unless the image uses ASCIIHexDecode or ASCII85Decode as one of its filters” and in Note 2: “if the final or only filter is ASCIIHexDecode or ASCII85Decode”.

Shouldn’t the first of those also talk about “if the final or only filter” rather than ASCII~ being “one of its filters”? I realise you’d need to have done something very odd if you’re using ASCII~ and something else, and the ASCII~ is not last, but …