Use standard spacing after period.

Author: davidlehn

README.md

@@ -9,7 +9,7 @@ credentials on the Web in a way that is cryptographically secure,
 privacy respecting, and machine-verifiable.
 
 We encourage contributions meeting the [Contribution
-Guidelines](CONTRIBUTING.md).  While we prefer the creation of issues
+Guidelines](CONTRIBUTING.md). While we prefer the creation of issues
 and Pull Requests in the GitHub repository, discussions often occur
 on the
 [public-vc-wg](http://lists.w3.org/Archives/Public/public-vc-wg/)

VCDMExplainer.md

@@ -346,7 +346,7 @@ but does not require it.
 
 ## Features at Risk
 
-We have asked for [preliminary commitments from potential implementers](https://docs.google.com/spreadsheets/d/1SzfAUA0J72-1BORHJEmY4cdZrQ6vmKy4oq_24r_NwB4/edit?usp=sharing).  We expect all features to have at
+We have asked for [preliminary commitments from potential implementers](https://docs.google.com/spreadsheets/d/1SzfAUA0J72-1BORHJEmY4cdZrQ6vmKy4oq_24r_NwB4/edit?usp=sharing). We expect all features to have at
 least two implementations. With current commitments, some features have exactly two.  
 Of course we will continue to recruit for additional implementations.