Fix link.

getusermedia.html

@@ -3747,14 +3747,14 @@ <h2>Implementation Suggestions</h2>
         used to decide which stream gets which media sources.</p>
       </div>
       <div class="practice">
-        <span class="practicelab" id="handling-devices">Generating deviceIds</span>
+        <span class="practicelab" id="generating-deviceids">Generating deviceIds</span>
         <p class="practicedesc">An efficient practice for generating a
         {{MediaDeviceInfo/deviceId}} is to generate a cryptographic hash from
-        a generated private key + (origin or origin + top-level origin, based
-        on the user agents' partitioning rules) + salt + device's underlying
-        (hardware) id in the driver, presented as an alphanumeric string. Using
-        32 bits or lower is recommended, but not much lower, to avoid risk of
-        collision.</p>
+        a private key + (origin or origin + top-level origin, based on the user
+        agents' partitioning rules) + salt + device's underlying (hardware) id
+        in the driver, presented as an alphanumeric string. Using 32 bits or
+        lower is recommended, but not much lower, to avoid risk of collision.
+        </p>
         <p class="practicedesc">A better (lower-entropy) alternative, at the
         cost storage, is to assign the numbers 0 through 255 randomly to each
         new device encountered for each origin or origin + top-level origin,