Fix broken links in README.md (#3842)

Fixes broken links regarding logging level settings. As far as
I can tell, these links have never been valid, and should direct
to the information regarding VSCodeVim's settings.

README.md

@@ -317,7 +317,7 @@ Custom remappings are defined on a per-mode basis.
 
 1.  Are your configurations correct?
 
-    Adjust the extension's [logging level](#vimdebuglogginglevel) to 'debug', restart VS Code. As each remapped configuration is loaded, it is outputted to console. In the Developer Tools console, do you see any errors?
+    Adjust the extension's [logging level](#vscodevim-settings) to 'debug', restart VS Code. As each remapped configuration is loaded, it is outputted to console. In the Developer Tools console, do you see any errors?
 
     ```console
     debug: Remapper: normalModeKeyBindingsNonRecursive. before=0. after=^.
@@ -329,7 +329,7 @@ Custom remappings are defined on a per-mode basis.
 
 2.  Does the extension handle the keys you are trying to remap?
 
-    VSCodeVim explicitly instructs VS Code which key events we care about through the [package.json](https://github.com/VSCodeVim/Vim/blob/1a5f358a1a57c62d5079093ad0dd12c2bf018bba/package.json#L53). If the key you are trying to remap is a key in which vim/vscodevim generally does not handle, then it's most likely that this extension does not receive those key events from VS Code. With [logging level](#vimdebuglogginglevel) adjusted to 'debug', as you press keys, you should see output similar to:
+    VSCodeVim explicitly instructs VS Code which key events we care about through the [package.json](https://github.com/VSCodeVim/Vim/blob/1a5f358a1a57c62d5079093ad0dd12c2bf018bba/package.json#L53). If the key you are trying to remap is a key in which vim/vscodevim generally does not handle, then it's most likely that this extension does not receive those key events from VS Code. With [logging level](#vscodevim-settings) adjusted to 'debug', as you press keys, you should see output similar to:
 
     ```console
     debug: ModeHandler: handling key=A.