Fix spelling / typesetting in various places

.github/ISSUE_TEMPLATE/bug_report.md

@@ -21,8 +21,8 @@ Traceback (most recent call last):
   File "[site-packages]/fbchat/client.py", line 78, in __init__
     self.login(email, password, max_tries)
   File "[site-packages]/fbchat/client.py", line 407, in login
-    raise FBchatUserError('Login failed. Check email/password. (Failed on url: {})'.format(login_url))
-fbchat.models.FBchatUserError: Login failed. Check email/password. (Failed on url: https://m.facebook.com/login.php?login_attempt=1)
+    raise FBchatUserError('Login failed. Check email/password. (Failed on URL: {})'.format(login_url))
+fbchat.models.FBchatUserError: Login failed. Check email/password. (Failed on URL: https://m.facebook.com/login.php?login_attempt=1)
 ```
 
 ## Environment information

.travis.yml

@@ -30,7 +30,7 @@ jobs:
     script: black --check --verbose .
 
   - stage: deploy
-    name: Github Releases
+    name: GitHub Releases
     if: tag IS present
     install: skip
     script: flit build

CONTRIBUTING.rst

@@ -1,5 +1,5 @@
-Contributing to fbchat
-======================
+Contributing to ``fbchat``
+==========================
 
 Thanks for reading this, all contributions are very much welcome!
 

README.rst

@@ -1,5 +1,5 @@
-fbchat: Facebook Chat (Messenger) for Python
-============================================
+``fbchat``: Facebook Chat (Messenger) for Python
+================================================
 
 .. image:: https://img.shields.io/badge/license-BSD-blue.svg
     :target: https://github.com/carpedm20/fbchat/tree/master/LICENSE

fbchat/_client.py

@@ -953,7 +953,7 @@ class Client(object):
 
         url = get_jsmods_require(j, 3)
         if url is None:
-            raise FBchatException("Could not fetch image url from: {}".format(j))
+            raise FBchatException("Could not fetch image URL from: {}".format(j))
         return url
 
     def fetchMessageInfo(self, mid, thread_id=None):