Enforce valid javadoc

config/checkstyle/checkstyle.xml

@@ -91,6 +91,9 @@
             <property name="tokens" value="VARIABLE_DEF"/>
             <property name="allowSamelineMultipleAnnotations" value="true"/>
         </module>
+        <module name="SingleLineJavadoc">
+            <property name="ignoreInlineTags" value="false"/>
+        </module>
         <module name="NestedIfDepth">
             <property name="max" value="4"/>
         </module>

core/src/main/java/de/danoeh/antennapod/core/storage/DBReader.java

@@ -689,7 +689,7 @@ public final class DBReader {
      * Returns credentials based on image URL
      *
      * @param imageUrl The URL of the image
-     * @return Credentials in format "<Username>:<Password>", empty String if no authorization given
+     * @return Credentials in format "Username:Password", empty String if no authorization given
      */
     public static String getImageAuthentication(final String imageUrl) {
         Log.d(TAG, "getImageAuthentication() called with: " + "imageUrl = [" + imageUrl + "]");

core/src/main/java/de/danoeh/antennapod/core/util/TimeSpeedConverter.java

@@ -10,7 +10,7 @@ public class TimeSpeedConverter {
     }
 
     /** Convert millisecond according to the current playback speed
-     * @param time: time to convert
+     * @param time time to convert
      * @return converted time (can be < 0 if time is < 0)
      */
     public int convert(int time) {

core/src/main/java/de/danoeh/antennapod/core/util/syndication/HtmlToPlainText.java

@@ -57,7 +57,7 @@ public class HtmlToPlainText {
      * Use this method to determine if a given text has any HTML tag
      *
      * @param str String to be tested for presence of HTML content
-     * @return <b>True</b> if text contains any HTML tags</br><b>False</b> is no HTML tag is found
+     * @return <b>True</b> if text contains any HTML tags<br /><b>False</b> is no HTML tag is found
      */
     private static boolean isHtml(String str) {
         final String HTML_TAG_PATTERN = "<(\"[^\"]*\"|'[^']*'|[^'\">])*>";