expanded acronyms

Expanded the first usages of IETF and RFC.

docs/eml-faq.md

@@ -420,7 +420,7 @@ v2.1.0.
 
 **Q:** What does ‘dereferenced’ mean?  (context: a URI in an annotation)
 
-**A:** Within the context of semantic annotation, "dereferencing" refers to the process of interpreting a URI, and providing "useful information" back about the Resource of interest. The phrase "resolving a URI" is often used synonymously with "dereferencing", but technically "resolution" refers to the process of determining HOW and WHAT to do with the URI, whereas "dereferencing" is explicitly about the action taken, which is typically retrieving a representation of the Resource of interest. The formal specification for these terms and what they mean is found in the IETF's RFC 3986 (<https://tools.ietf.org/html/rfc3986>). [SC: I would expand the acronyms for the Internet Engineering Task Force and Request for Comment because this is the first time those terms are introduced.]
+**A:** Within the context of semantic annotation, "dereferencing" refers to the process of interpreting a URI, and providing "useful information" back about the Resource of interest. The phrase "resolving a URI" is often used synonymously with "dereferencing", but technically "resolution" refers to the process of determining HOW and WHAT to do with the URI, whereas "dereferencing" is explicitly about the action taken, which is typically retrieving a representation of the Resource of interest. The formal specification for these terms and what they mean is found in the IETF's (Internet Engineering Task Force) RFC (Request for Comment) 3986 (<https://tools.ietf.org/html/rfc3986>). 
 
 
 **Q:** Explain the difference between an URI and a URL. (context: sample URIs look a lot like a URL.  What makes it a URI?)