fix(102): slash, not backslash, in API name (#398)

The AEPs incorrectly used the term "backslash".

fixes #395
---------

Co-authored-by: Mike Kistler <mkistler@sbcglobal.net>

Author: toumorokoshi

aep/general/0102/aep.md.j2

@@ -25,10 +25,11 @@ can still ensure uniqueness can be used. For example APIs served at
 
 The API Name:
 
-- **must** only uses valid domain name characters as specified in
+- **must** only use valid domain name characters as specified in
   [RFC 1035](https://datatracker.ietf.org/doc/html/rfc1035#section-2.3.1), or a
-  backslash `[.-a-z0-9/]`)
-- **must** use all lower case.
+  slash `[.-a-z0-9/]`)
+- **must** use all lowercase.
+- **must** start with a lowercase letter.
 - **should not** use path prefixes that could also be misconstrued as a
   resource collection (e.g. `apis.examples.com/users`)