Correct Content-Type syntax in documentation

Doc/library/urllib.request.rst

@@ -1107,7 +1107,7 @@ The code for the sample CGI used in the above example is::
    #!/usr/bin/env python
    import sys
    data = sys.stdin.read()
-   print('Content-type: text-plain\n\nGot Data: "%s"' % data)
+   print('Content-type: text/plain\n\nGot Data: "%s"' % data)
 
 Here is an example of doing a ``PUT`` request using :class:`Request`::
 

Lib/http/cookiejar.py

@@ -423,10 +423,10 @@ def join_header_words(lists):
     Takes a list of lists of (key, value) pairs and produces a single header
     value.  Attribute values are quoted if needed.
 
-    >>> join_header_words([[("text/plain", None), ("charset", "iso-8859/1")]])
-    'text/plain; charset="iso-8859/1"'
-    >>> join_header_words([[("text/plain", None)], [("charset", "iso-8859/1")]])
-    'text/plain, charset="iso-8859/1"'
+    >>> join_header_words([[("text/plain", None), ("charset", "iso-8859-1")]])
+    'text/plain; charset="iso-8859-1"'
+    >>> join_header_words([[("text/plain", None)], [("charset", "iso-8859-1")]])
+    'text/plain, charset="iso-8859-1"'
 
     """
     headers = []