changed the way to extract peertube description

if the description length is above 254, and ends with ..., it means the description we got from the first request is shortened.
why above 254: because in fact, shortened descriptions length are between 255 : https://framatube.org/videos/watch/24efbe1b-73c0-4d72-a3ff-77c8b32d3fcd
https://framatube.org/videos/watch/1ca99f40-fb5b-4fa4-abe5-4d54325df7fc
and 269: https://framatube.org/videos/watch/4d661d5f-a884-4510-bca8-15cb19aa3fe5

also fixed a typo in StreamExtractor.java

Author: B0pol

extractor/src/main/java/org/schabi/newpipe/extractor/services/peertube/extractors/PeertubeStreamExtractor.java

@@ -70,20 +70,23 @@ public String getThumbnailUrl() throws ParsingException {
 
     @Override
     public String getDescription() throws ParsingException {
-        String description = "";
-        Downloader dl = NewPipe.getDownloader();
+        String desc;
         try {
-            Response response = dl.get(getUrl() + "/description");
-            JsonObject jsonObject = JsonParser.object().from(response.responseBody());
-            description = JsonUtils.getString(jsonObject, "description");
-        } catch (ReCaptchaException | IOException | JsonParserException e) {
-            e.printStackTrace();
+            desc = JsonUtils.getString(json, "description");
+        } catch (ParsingException e) {
+            return "No description";
         }
-        if (description.equals("")) {
-            //if the request above failed
-            description = JsonUtils.getString(json, "description");
+        if (desc.length() >= 255 && desc.substring(desc.length() - 3).equals("...")) {
+            Downloader dl = NewPipe.getDownloader();
+            try {
+                Response response = dl.get(getUrl() + "/description");
+                JsonObject jsonObject = JsonParser.object().from(response.responseBody());
+                desc = JsonUtils.getString(jsonObject, "description");
+            } catch (ReCaptchaException | IOException | JsonParserException e) {
+                e.printStackTrace();
+            }
         }
-        return description;
+        return desc;
     }
 
     @Override

extractor/src/main/java/org/schabi/newpipe/extractor/stream/StreamExtractor.java

@@ -353,7 +353,7 @@ protected long getTimestampSeconds(String regexPattern) throws ParsingException
 
     /**
      * The host of the stream (Eg. peertube.cpy.re).
-     * If the privacy is not available, or if the service doesn't use
+     * If the host is not available, or if the service doesn't use
      * a federated system, but a centralised system,
      * you can simply return an empty string.
      * @return the host of the stream or an empty String.