Typofix in README.adoc (knl#47)

Update README.adoc

README.adoc

@@ -1,16 +1,16 @@
-= niv-updater: Automated dependency updates with niv 
+= niv-updater: Automated dependency updates with niv
 
 image:https://github.com/knl/niv-updater-action/workflows/CI/badge.svg[CI]
 image:https://img.shields.io/github/v/release/knl/niv-updater-action[GitHub release (latest by date)]
 
-This action will open a pull request to master branch (or otherwise specified
+This action will open a pull request to `master` branch (or otherwise specified
 branch) whenever https://github.com/nmattia/niv[niv] detects updates to
 `nix/sources.json` in your repository, for each dependency separately. Each PR
 will contain a beautiful Changelog of all the changes in the update, like this:
 
 image:./assets/niv-update-action-changelog.png[title="Changelog generated by niv-updater-action]
 
-The best way to use niv-updater-action is to set up a scheduled workflow. This
+The best way to use `niv-updater-action` is to set up a scheduled workflow. This
 way, whenever there are new updates, you will get a PR that you can just
 approve and avoid a lot of manual work.
 
@@ -53,13 +53,13 @@ jobs:
   This value will be passed to niv via `--sources-file` option. Defaults to
   `nix/sources.json`.
 * `niv_version`: (Optional) The niv version to be used. Defaults to `master`,
-  meaning niv-updater-action will take the latest niv for each run. You may want
+  meaning `niv-updater-action` will take the latest niv for each run. You may want
   to fix a particular version and avoid future breaks to your workflow.
 * `branch_prefix`: (Optional) The prefix used for update branches, created by
   this action. The action does not sanitize the branch name. For a description
   of what a valid branch name is, please consult:
   https://mirrors.edge.kernel.org/pub/software/scm/git/docs/git-check-ref-format.html.
-  Defaults to "update/".
+  Defaults to `update/`.
 * `keep_updating`: (Optional) If PR already exists, keep it updated with new
   changes. The branch will be force updated, as this process keeps a single
   commit on a branch. Defaults to `false` to maintain the old behaviour.
@@ -101,12 +101,12 @@ jobs:
   https://github.com/knl/niv-updater-action/issues/26[Issue #26]. Defaults to
   `true`.
 * `debug_output`: (Optional, a boolean) If `true`, `set -x` will be turned on
-  for the updater script, outputing every step the action takes. This will show
+  for the updater script, outputting every step the action takes. This will show
   up in the action log, and could be useful for trying to reproduce issues
   locally. Defaults to `false`.
 
 As the above list suggests, `niv-updater-action` is highly configurable.
-The following example exposes some of the nobs, many with their default values:
+The following example exposes some of the knobs, many with their default values:
 
 [source,yaml]
 ----