Docs: Clean up some Python references.

Make sure we captitalize Python and use its HTTPS URL.

doc/README.idl2wrs

@@ -46,7 +46,7 @@ need the following.
 
 
 1. Python must be installed
-   http://python.org/
+   https://python.org/
 
 2. omniidl from the omniORB package must be available.
    http://omniorb.sourceforge.net/

doc/extcap.adoc

@@ -36,11 +36,8 @@ WINDOWS USERS: Because of restrictions directly calling the script may not alway
 In such a case, a batch file may be provided, which then in turn executes the script. Please
 refer to doc/extcap_example.py for more information.
 
-When Wireshark launches an extcap, it automatically adds its installation path
-(c:\Program Files\Wireshark\) to the DLL search path so that the extcap library dependencies
-can be found (it is not designed to be launched by hand).  This is done on purpose. There should
-only be extcap programs (executable, python scripts, ...) in the extcap folder to reduce the startup
-time and not have Wireshark trying to execute other file types.
+When Wireshark launches an extcap, it automatically adds its installation path (normally _C:\Program Files\Wireshark\_) to the DLL search path so that the extcap library dependencies can be found (it is not designed to be launched by hand).
+This is done on purpose. There should only be extcap programs (executables, Python scripts, ...) in the extcap folder to reduce the startup time and not have Wireshark trying to execute other file types.
 
 == GRAMMAR ELEMENTS
 

doc/extcap_example.py

@@ -20,7 +20,7 @@ the extcap folder, with the following content:
 
 -------
 @echo off
-<Path to python interpreter> <Path to script file> %*
+C:\Windows\py.exe C:\Path\to\extcap_example.py %*
 -------
 
 Windows is not able to execute Python scripts directly, which also goes for all
@@ -445,7 +445,7 @@ if __name__ == '__main__':
 
     parser = ArgumentParser(
             prog="Extcap Example",
-            description="Extcap example program for python"
+            description="Extcap example program for Python"
             )
 
     # Extcap Arguments

docbook/wsdg_src/WSDG_chapter_tests.adoc

@@ -68,7 +68,7 @@ be skipped while other tests can still run to completion.
 
 The `test/test.py` script uses Python's “unittest” module. Our tests are
 patterned after it, and individual tests are organized according to
-suites, cases, and individual tests. Suites correspond to python modules
+suites, cases, and individual tests. Suites correspond to Python modules
 that match the pattern “suite_*.py”. Cases correspond to one or more
 classes in each module, and case class methods matching the pattern
 ”test_*” correspond to individual tests. For example, the invalid

docbook/wsdg_src/WSDG_chapter_tools.adoc

@@ -655,9 +655,10 @@ Your version string will likely vary.
 
 === Python
 
-https://python.org/[Python] is an interpreted programming language. It is
-used to generate some source files, documentation, testing and other tasks.
-Python 3.4 and later is required. Python 2.7 is no longer supported.
+https://python.org/[Python] is an interpreted programming language.
+It is used to generate some source files, documentation, testing and other tasks.
+Python 3.6 and later is required.
+Python 2 is no longer supported.
 
 Python is either included or available as a package on most UNIX-like platforms.
 Windows packages and source are available at https://python.org/download/[].