Merge pull request #41 from webmink/webmink-patch-2

Update 0.Introduction.md

Chapters/0.Introduction.md

@@ -12,15 +12,15 @@ chain, developer communities need tools to cope with the increasing complexity.
 
 A key building block for addressing this issue is a system of *intrinsic*
 identifiers that allows to precisely pinpoint the exact version of any software
-artefact, at all levels of granularity, *without relying* on any central registry
+artifact, at all levels of granularity, *without relying* on any central registry
 or naming authority.
 
 With this specification, the SWHID working group makes such a system of
 intrinsic identifiers, originally developed for the Software Heritage
-universal source code archive, available to all stakeholder.
+universal source code archive, available to all stakeholders.
 
 For the sake of clarity, we will use examples drawn directly from the Software
 Heritage archive, but notice that systems for persistent archival of software
-artefacts, as well as resolution of SWHIDs are out of the scope of this
+artifacts, as well as resolution of SWHIDs are out of the scope of this
 specification, and the SWHID specification does not require in any way the
 use of Software Heritage.