Fix wording on Status field

Conflicting text was added that contradicts what the Status field can be
when an EP lands. Instead refer back to the main text where this is
explained.

Fix minor grammar mishap, change "a" to "an".

Fixes: f5875b4 "Revise Format section"
PR-URL: nodejs#16
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: trevnorris

README.md

@@ -9,7 +9,7 @@ EPs are used when the proposed feature is a substantial new API, is too broad
 or would modify APIs heavily. Minor changes do not require writing an EP.  What
 is and isn't minor is subjective, so as a general rule, users should discuss
 the proposal briefly by other means (issue tracker, mailing list or IRC) and
-write a EP when requested by the Node core team.
+write an EP when requested by the Node core team.
 
 ## Rational
 
@@ -32,9 +32,6 @@ template and information at the top of the file:
 | Date   | YYYY-MM-DD      |
 ```
 
-The "Status" field should always read **DRAFT**. This will be changed to
-**ACCEPTED** or **REJECTED** when the EP lands.
-
 The document file name must conform to the format `"XXX-title-ish.md"`
 (literally starting with `XXX` and not a self assigned number). At the time the
 EP lands it will be assigned a number and added to `000-index.md`. There is no
@@ -45,6 +42,9 @@ Files should follow the convention of keeping lines to a maximum of 80
 characters. Exceptions can be made in cases like long URLs or when pasting the
 output of an application. For example a stack trace from gdb.
 
+More information of the "Status" field can be found in
+[Progress of an EP](#progress-of-an-ep).
+
 ## Content
 
 EP documents should be as detailed as possible. Any type of media which helps
@@ -55,7 +55,7 @@ diagram, pseudocode or actual C code.
 
 All EP documents must be MIT licensed.
 
-## Progress of a EP
+## Progress of an EP
 
 All EPs will be committed to the repository regardless of their acceptance.
 The initial status shall be **"DRAFT"**.
@@ -69,4 +69,4 @@ rejection.
 A document shall also be committed in **"DRAFT"** status. This means consensus
 has not been reached yet.
 
-The author of a EP is expected to actually pursue and implement the proposal.
+The author of an EP is expected to actually pursue and implement the proposal.