Dev guide: mention field types for manifest, along with examples edit…

…ed to the new format (PR #8594)

Fixes #8593

Dev guide: mention field types for manifest, along with examples edited to show proper value format.

developerGuide.t2t

@@ -661,40 +661,43 @@ This manifest file contains key = value pairs declaring info such as the add-on'
 Although it is highly suggested that manifests contain all fields, the fields marked as mandatory must be included.
 Otherwise, the add-on will not install.
 
-- name: A short unique name for the add-on. This is used to differentiate add-ons internally and is not shown to the user. (Mandatory)
-- summary: The name of the add-on as shown to the user. (Mandatory)
-- version: The version of this add-on; e.g. 2.0. (Mandatory)
-- author: The author of this add-on, preferably in the form Full Name <email address>; e.g. Michael Curran <mick@kulgan.net>. (Mandatory)
-- description: A sentence or two describing what the add-on does.
-- url: A URL where this add-on, further info and upgrades can be found.
-- docFileName: The name of the main documentation file for this add-on; e.g. readme.html. See the [Add-on Documentation #AddonDoc] section for more details.
-- minimumNVDAVersion: The minimum required version of NVDA for this add-on to be installed or enabled.
+- name (string): A short unique name for the add-on. This is used to differentiate add-ons internally and is not shown to the user. (Mandatory)
+- summary (string): The name of the add-on as shown to the user. (Mandatory)
+- version (string): The version of this add-on; e.g. 2.0. (Mandatory)
+- author (string): The author of this add-on, preferably in the form Full Name <email address>; e.g. Michael Curran <mick@kulgan.net>. (Mandatory)
+- description (string): A sentence or two describing what the add-on does.
+- url (string): A URL where this add-on, further info and upgrades can be found.
+- docFileName (string): The name of the main documentation file for this add-on; e.g. readme.html. See the [Add-on Documentation #AddonDoc] section for more details.
+- minimumNVDAVersion (string): The minimum required version of NVDA for this add-on to be installed or enabled.
   - e.g "2019.1.1"
   - Must be a three part version string I.E. Year.Major.Minor, or a two part version string of Year.Major. In the second case, Minor defaults to 0.
   - Defaults to "0.0.0"
   - Must be less than or equal to `lastTestedNVDAVersion`
-- lastTestedNVDAVersion: The last version of NVDA this add-on has been tested with.
+- lastTestedNVDAVersion (string): The last version of NVDA this add-on has been tested with.
   - e.g "2019.1.0"
   - Must be a three part version string I.E. Year.Major.Minor, or a two part version string of Year.Major. In the second case, Minor defaults to 0.
   - Defaults to "0.0.0"
   - Must be greater than or equal to `minimumNVDAVersion`
 -
 
+All string values must be enclosed in quotes as shown in the example below.
+
 The lastTestedNVDAVersion field in particular is used to ensure that users can be confident about installing an add-on.
 It allows the add-on author to make an assurance that the add-on will not cause instability, or break the users system.
 When this is not provided, or is less than the current version of NVDA (ignoring minor point updates EG 2018.3.1) then the user will be warned not to install the add-on.
 
 +++ An Example Manifest File +++
 ```
 --- start ---
-name = MyTestAddon
-summary = Cool Test Add-on
-version = 1.0
-description = An example add-on showing how to create add-ons!
-author = Michael Curran <mick@kulgan.net>
-url = http://www.nvda-project.org/wiki/Development
-minimumNVDAVersion = 2018.1.0
-lastTestedNVDAVersion = 2019.1.0
+name = "myTestAddon"
+summary = "Cool Test Add-on"
+version = "1.0"
+description = "An example add-on showing how to create add-ons!"
+author = "Michael Curran <mick@kulgan.net>"
+url = "http://www.nvda-project.org/wiki/Development"
+docFileName = "readme.html"
+minimumNVDAVersion = "2018.1.0"
+lastTestedNVDAVersion = "2019.1.0"
 --- end ---
 ```