fix typos pointed out by RadioIG in RFC page

Author: pdowler

DALI.tex

@@ -287,7 +287,7 @@ \subsection{Synchronous Execution: DALI-sync}
 \subsection{DALI-examples}
 \label{sec:dali-examples}
 The DALI-examples endpoint returns a document with usage examples or similar
-material to the user. In DAL services, this endpoint is always accessed as a
+material to the user. In DAL services, this endpoint is always accessed
 using the name ``examples''. It is a child of the base URL for the service. The
 following specification is intended to make sure the content is usable for both
 machines and humans. As such, the DALI-examples endpoint contains additional
@@ -504,7 +504,7 @@ \subsection{Availability: VOSI-availability}
 VOSI-availability \citep{2017ivoa.spec.0524G} defines a simple endpoint that
 reports on the current ability of the service to perform.
 
-If the VOSI-availability endpoint implemented a description
+If the VOSI-availability endpoint is implemented a description
 of this capability must be provided in the VOSI-capabilities document.
 The VOSI-availability endpoint is
 intended to respond with a dynamically generated document describing the current state of the service