github/ISSUE_TEMPLATE: Make minor improvements to placeholder text.

Move the "delete placeholder" to the end, so it's not the first thing the
reader does.  And add extra text calling out "how do I?" questions.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -7,9 +7,7 @@ assignees: ''
 
 ---
 
-* Remove all placeholder text below before submitting.
-
-* Please search existing issues before raising a new issue. For questions about MicroPython or for help using MicroPython, please see the MicroPython Forum -- https://forum.micropython.org/
+* Please search existing issues before raising a new issue. For questions about MicroPython or for help using MicroPython, or any sort of "how do I?" requests, please see the MicroPython Forum (https://forum.micropython.org/) or raise a documentation request instead.
 
 * In your issue, please include a clear and concise description of what the bug is, the expected output, and how to replicate it.
 
@@ -23,3 +21,5 @@ assignees: ''
  - firmware file name
  - git commit hash and port/board
  - version information shown in the REPL (hit Ctrl-B to see the startup message)
+
+* Remove all placeholder text above before submitting.

.github/ISSUE_TEMPLATE/documentation.md

@@ -7,10 +7,10 @@ assignees: ''
 
 ---
 
-* Remove all placeholder text below before submitting.
-
-* Please search existing issues before raising a new issue. For questions about MicroPython or for help using MicroPython, please see the MicroPython Forum -- https://forum.micropython.org/
+* Please search existing issues before raising a new issue. For questions about MicroPython or for help using MicroPython, or any sort of "how do I?" requests, please see the MicroPython Forum -- https://forum.micropython.org/
 
 * Describe what was missing from the documentation and/or what was incorrect/incomplete.
 
 * If possible, please link to the relevant page on https://docs.micropython.org/
+
+* Remove all placeholder text above before submitting.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -7,9 +7,7 @@ assignees: ''
 
 ---
 
-* Remove all placeholder text below before submitting.
-
-* Please search existing issues before raising a new issue. For questions about MicroPython or for help using MicroPython, please see the MicroPython Forum -- https://forum.micropython.org/
+* Please search existing issues before raising a new issue. For questions about MicroPython or for help using MicroPython, or any sort of "how do I?" requests, please see the MicroPython Forum (https://forum.micropython.org/) or raise a documentation request instead.
 
 * Describe the feature you'd like to see added to MicroPython. In particular, what does this feature enable and why is it useful. MicroPython aims to strike a balance between functionality and code size, so please consider whether this feature can be optionally enabled and whether it can be provided in other ways (e.g. pure-Python library).
 
@@ -22,3 +20,5 @@ assignees: ''
 * For drivers (e.g. for external hardware), please link to datasheets and/or existing drivers from other sources.
 
 * Who do you expect will implement the feature you are requesting? Would you be willing to sponsor this work?
+
+* Remove all placeholder text above before submitting.

.github/ISSUE_TEMPLATE/security.md

@@ -7,10 +7,10 @@ assignees: ''
 
 ---
 
-* Remove all placeholder text before submitting the new issue.
-
 * If you need to raise this issue privately with the MicroPython team, please email contact@micropython.org instead.
 
 * Include a clear and concise description of what the security issue is.
 
 * What does this issue allow an attacker to do?
+
+* Remove all placeholder text above before submitting.