Correct privacy spectrum SVG viewBox to not cut off bottom of image.

Author: fabienpe

diagrams/privacy-spectrum.svg

@@ -713,7 +713,7 @@ <h3>Credentials</h3>
 
         <figure id="basic-vc">
           <img style="margin: auto; display: block; width: 50%;"
-               src="diagrams/vc.svg" alt="a Verifible
+               src="diagrams/vc.svg" alt="a Verifiable
                Credential contains Credential Metadata, Claim(s), and
                Proof(s)">
           <figcaption style="text-align: center;">
@@ -750,7 +750,7 @@ <h3>Credentials</h3>
           <img style="margin: auto; display: block; width: 100%;"
                src="diagrams/vc-graph.svg" alt="diagram with a
                Credential Graph on top connected via a proof to a
-               Proof Graph on the bottom.  The Credental Graph has
+               Proof Graph on the bottom.  The Credential Graph has
                Credential 123 with 4 properties: 'type' of value
                ExampleAlumniCredential, 'issuer' of Example University,
                'validFrom' of 2010-01-01T19:23:24Z, and
@@ -4795,7 +4795,7 @@ <h3>Bundling Dependent Claims</h3>
 
         <p>
 For example, a university might issue two <a>verifiable credentials</a> to a
-person, each containing two <a>properties</a>, which must be taken together to
+person, each containing two <a>properties</a>, which must be taken together
 to designate the "role" of that person in a given "department", such as "Staff
 Member" in the "Department of Computing", or "Post Graduate Student" in the
 "Department of Economics". If these <a>verifiable credentials</a> are atomized