improve docstring

server.py

@@ -247,7 +247,7 @@ talkinghead = None  # populated when the module is loaded
 @app.route("/api/talkinghead/load", methods=["POST"])
 @require_module("talkinghead")
 def api_talkinghead_load():
-    """Load the talkinghead sprite posted in the request. Resume animation if paused."""
+    """Load the talkinghead sprite posted in the request. Resume animation if the talkinghead module was paused."""
     file = request.files['file']
     # convert stream to bytes and pass to talkinghead
     return talkinghead.talkinghead_load_file(file.stream)
@@ -255,7 +255,7 @@ def api_talkinghead_load():
 @app.route('/api/talkinghead/unload')
 @require_module("talkinghead")
 def api_talkinghead_unload():
-    """Pause talkinghead animation. Can be enabled again via '/api/talkinghead/load'."""
+    """Pause the talkinghead module. To resume, load a character via '/api/talkinghead/load'."""
     return talkinghead.unload()
 
 @app.route('/api/talkinghead/start_talking')
@@ -275,6 +275,12 @@ def api_talkinghead_stop_talking():
 def api_talkinghead_set_emotion():
     """Set talkinghead character emotion to that posted in the request.
 
+    Input format is JSON::
+
+        {"emotion_name": "curiosity"}
+
+    where the key "emotion_name" is literal, and the value is the emotion to set.
+
     There is no getter, because SillyTavern keeps its state in the frontend
     and the plugins only act as slaves (in the technological sense of the word).
     """