fixing obvious errors

CONTRIBUTING.md

@@ -45,7 +45,7 @@ When adding default configuration, it MUST match the following:
 - Prefix the configuration with the name of the package, using snake case
   - Example: `alacritty_version: v0.16.1`
   - This keeps the configuration unique per package, and allows for the defaults
-    to be over-ridden where needed.
+    to be overridden where needed.
 
 The things that should be in the default configuration, if relevant, are:
 
@@ -127,6 +127,15 @@ in place (usually in `<install_prefix>/bin`).
                 remote:
                   name: <remote name>
                   url: <flatpakrepo url>
-                  method: <optional, either 'system' or 'user'
+                  method: <optional. Default 'system'>
+                ```
+        - `pkg_flatpak` is a list of dicts describing how to install a flatpak
+            - Managed using `community.general.flatpak` ansible module.
+            - Format is:
+                ```yaml
+                flatpak:
+                  name: <flatpak name>
+                  remote: <remote to install from>
+                  method: <optional. Default 'system'>
+                  state: <optional. Default 'present'>
                 ```
-        - `pkg_flatpak` is a list of dicts