Bikeshed fixes

Some fixes for bikeshed generation

index.bs

@@ -1414,7 +1414,7 @@ browser to create a new credential for future use by the [=[RP]=]. See <a href="
 
 
 <figure id="fig-registration">
-    <img no-autosize src="images/webauthn-registration-flow-01.svg"></img>
+    <img no-autosize src="images/webauthn-registration-flow-01.svg">
     <figcaption>Registration Flow</figcaption>
 </figure>
 
@@ -1424,7 +1424,7 @@ Scripts can also request the user’s permission to perform
 
 
 <figure id="fig-authentication">
-    <img no-autosize src="images/webauthn-authentication-flow-01.svg"></img>
+    <img no-autosize src="images/webauthn-authentication-flow-01.svg">
     <figcaption>Authentication Flow</figcaption>
 </figure>
 
@@ -2552,7 +2552,7 @@ When this method is invoked, the user agent MUST execute the following algorithm
             1.  <span id="assertionCreationDataCreation"></span>
                 Let <var ignore>assertionCreationData</var> be a [=struct=] whose [=struct/items=] are:
 
-                :   <code><dfn for="assertionCreationData">credentialIdResult</code>
+                :   <code><dfn for="assertionCreationData">credentialIdResult</dfn></code>
                 ::  If <code>|savedCredentialIds|[|authenticator|]</code> exists, set the value of [=credentialIdResult=] to be
                     the bytes of <code>|savedCredentialIds|[|authenticator|]</code>. Otherwise, set the value of
                     [=credentialIdResult=] to be the bytes of the [=credential ID=] returned from the successful
@@ -4746,7 +4746,7 @@ the requested [=public key credential|credential=] is [=scoped=] to exactly matc
 <a href="#fig-authData">Figure <span class="figure-num-following"></span></a> shows a visual representation of the [=authenticator data=] structure.
 
 <figure id="fig-authData">
-    <img no-autosize src="images/fido-signature-formats-figure1.svg"></img>
+    <img no-autosize src="images/fido-signature-formats-figure1.svg">
     <figcaption>[=Authenticator data=] layout.</figcaption>
 </figure>
 
@@ -5336,7 +5336,7 @@ a numbered step. If outdented, it (today) is rendered as a bullet in the midst o
     client data=] (which potentially has a variable length) is always the last element.
 
     <figure id="fig-signature">
-        <img no-autosize src="images/fido-signature-formats-figure2.svg"></img>
+        <img no-autosize src="images/fido-signature-formats-figure2.svg">
         <figcaption>Generating an [=assertion signature=].</figcaption>
     </figure>
 
@@ -5448,7 +5448,7 @@ Since that leaves a partial UTF-8 code point, the remainder of that code point m
 Since that leaves a partial [=grapheme cluster=], the remainder of that cluster should also be removed.
 
 <figure id="fig-stringTruncation">
-    <img no-autosize src="images/string-truncation.svg"></img>
+    <img no-autosize src="images/string-truncation.svg">
     <figcaption>The end of a UTF-8 encoded string showing the positions of different truncation boundaries.</figcaption>
 </figure>
 
@@ -5529,7 +5529,7 @@ for the [=[RP]=] to base a trust decision on.
 In these cases, the [=authenticator=] provides no guarantees about its operation to the [=[RP]=].
 
 <figure id="fig-attStructs">
-    <img no-autosize src="images/fido-attestation-structures.svg"></img>
+    <img no-autosize src="images/fido-attestation-structures.svg">
     <figcaption>[=Attestation object=] layout illustrating the included [=authenticator data=] (containing [=attested credential
     data=]) and the [=attestation statement=].</figcaption>
 </figure>