update docs for timeout arguments to clarify that it uses seconds

Author: DetachHead

src/requests/adapters.py

@@ -147,7 +147,7 @@ def send(
 
         :param request: The :class:`PreparedRequest <PreparedRequest>` being sent.
         :param stream: (optional) Whether to stream the request content.
-        :param timeout: (optional) How long to wait for the server to send
+        :param timeout: (optional) How many seconds to wait for the server to send
             data before giving up, as a float, or a :ref:`(connect timeout,
             read timeout) <timeouts>` tuple.
         :type timeout: float or tuple
@@ -617,7 +617,7 @@ def send(
 
         :param request: The :class:`PreparedRequest <PreparedRequest>` being sent.
         :param stream: (optional) Whether to stream the request content.
-        :param timeout: (optional) How long to wait for the server to send
+        :param timeout: (optional) How many seconds to wait for the server to send
             data before giving up, as a float, or a :ref:`(connect timeout,
             read timeout) <timeouts>` tuple.
         :type timeout: float or tuple or urllib3 Timeout object

src/requests/sessions.py

@@ -535,7 +535,7 @@ def request(
             for multipart encoding upload.
         :param auth: (optional) Auth tuple or callable to enable
             Basic/Digest/Custom HTTP Auth.
-        :param timeout: (optional) How long to wait for the server to send
+        :param timeout: (optional) How many seconds to wait for the server to send
             data before giving up, as a float, or a :ref:`(connect timeout,
             read timeout) <timeouts>` tuple.
         :type timeout: float or tuple