docs: Javadoc cleanup

There were a number of Javadoc style problems in the
WifiNetworkSuggestion.Builder.build() docs, which caused some formatting
problems.

One specific problem worth noting: A {{ causes trouble at publish time,
because it looks like the start of a Django directive. But escaping the
{ -- e.g. &#123 -- doesn't work, because the Javadoc compiler helpfully
escapes the *ampersand*, so the HTML output is "&#123", which
renders on the page as "&#123" instead of "{". So putting a space
between the two braces seems like the simplest solution.

No code changes here, just Javadoc comment fixes.

Tested by building the docs and staging to:

http://go/dac-stage/reference/android/net/wifi/WifiNetworkSuggestion.Builder#build

Screenshots (in case the stage gets overwritten):
https://screenshot.googleplex.com/o4p7efFGCbJ.png (1)
https://screenshot.googleplex.com/nkhEqU54LNb.png (2)

Bug: 128536865
Test: make ds-docs (then build & stage)
Change-Id: Ie04bc4dc517443a6899aba989beeb38b9299826e

wifi/java/android/net/wifi/WifiNetworkSuggestion.java

@@ -374,12 +374,11 @@ public final class WifiNetworkSuggestion implements Parcelable {
         }
 
         /**
-         * Create a network suggestion object use in
+         * Create a network suggestion object for use in
          * {@link WifiManager#addNetworkSuggestions(List)}.
          *
-         * See {@link WifiNetworkSuggestion}.
-         *<p>
-         * Note: Apps can set a combination of SSID using {@link #setSsid(String)} and BSSID
+         *<p class="note">
+         * <b>Note:</b> Apps can set a combination of SSID using {@link #setSsid(String)} and BSSID
          * using {@link #setBssid(MacAddress)} to provide more fine grained network suggestions to
          * the platform.
          * </p>
@@ -387,7 +386,8 @@ public final class WifiNetworkSuggestion implements Parcelable {
          * For example:
          * To provide credentials for one open, one WPA2 and one WPA3 network with their
          * corresponding SSID's:
-         * {@code
+         *
+         * <pre>{@code
          * final WifiNetworkSuggestion suggestion1 =
          *      new Builder()
          *      .setSsid("test111111")
@@ -403,19 +403,20 @@ public final class WifiNetworkSuggestion implements Parcelable {
          *      .setWpa3Passphrase("test6789")
          *      .build()
          * final List<WifiNetworkSuggestion> suggestionsList =
-         *      new ArrayList<WifiNetworkSuggestion> &#123;{
+         *      new ArrayList<WifiNetworkSuggestion> { {
          *          add(suggestion1);
          *          add(suggestion2);
          *          add(suggestion3);
-         *      }};
+         *      } };
          * final WifiManager wifiManager =
          *      context.getSystemService(Context.WIFI_SERVICE);
          * wifiManager.addNetworkSuggestions(suggestionsList);
-         * ...
-         * }
+         * // ...
+         * }</pre>
          *
-         * @return Instance of {@link WifiNetworkSuggestion}.
-         * @throws IllegalStateException on invalid params set.
+         * @return Instance of {@link WifiNetworkSuggestion}
+         * @throws IllegalStateException on invalid params set
+         * @see WifiNetworkSuggestion
          */
         public @NonNull WifiNetworkSuggestion build() {
             if (mSsid == null) {