Remove trailing spaces.

index.html

@@ -247,7 +247,7 @@ <h2>Introduction</h2>
 document into its canonical form, and then applies selective disclosure
 primitives to separate the canonical form into mandatory and selectively
 disclosed statements, which are appropriately processed and serve as inputs to
-the BBS `ProofGen` function. Suitably processed, the output of this function 
+the BBS `ProofGen` function. Suitably processed, the output of this function
 becomes the signed selectively disclosed credential sent to a verifier. Using
 canonicalization and selective disclosure primitives, the verifier can then use
 the BBS `verifyProof` function to validate the credential.