Improve formatting in AmlSpec.rtf

• Increase font size from 9 to 14. Many articles recommend a font size of 16px for body text on websites, and I would prefer 16px, but since you used 9px, I guess you like it smaller. 14px is the minimum I find readable.
• Use a proportional font (Times) instead of a monospace font (Courier New) in paragraphs that are mainly prose, not code. Proportional text is easier to read than monospace text, and since this is RTF and not plain text, we can use its multiple-font features.