Save session on connect and fix some typos

The session is saved upon connecting with the hope to make
sure that the authorization key gets saved to disk before
the next run.

readthedocs/extra/examples/telegram-client.rst

@@ -501,7 +501,7 @@ For instance, let's imagine ``you`` are the bot talking to ``usr``:
     <usr> ?
     <you> Your name didn't have any letters! Try again
     <usr> Lonami
-    <you> Thanks!
+    <you> Thanks Lonami!
 
 This can be programmed as follows:
 

telethon/client/telegrambaseclient.py

@@ -313,6 +313,7 @@ class TelegramBaseClient(abc.ABC):
             loop=self._loop, proxy=self._proxy
         ))
         self.session.auth_key = self._sender.auth_key
+        self.session.save()
 
         await self._sender.send(self._init_with(
             functions.help.GetConfigRequest()))

telethon_examples/assistant.py

@@ -351,7 +351,7 @@ async def handler(event):
         for i in range(1, 4)
     ]
     what = max(rates, key=lambda t: t[1])
-    if what[1] < 0.7:
+    if what[1] < 0.75:
         return
 
     name = what[0]