Update README.md

Fix typos

README.md

@@ -8,13 +8,13 @@ the org.gnome.Recipes.json file at the toplevel.
 The manifests should build releases, not development snapshots, so please use
 tarballs or git tags, not just the tip of a branch.
 
-In case you build from a git tag, please specify both the tag name and the commit id, liks so:
+In case you build from a git tag, please specify both the tag name and the commit id, like so:
 ```
    "branch": "1.0.4",
    "commit": "cdfb19b90587bc0c44404fae30c139f9ec1cca5c"
 ```
 This makes the build repeatable, since a tag can otherwise change its value over time.
-You can also use only a commit, but specifing a tag name if there is one is good for readability.
+You can also use only a commit, but specifying a tag name if there is one is good for readability.
 
 Flathub always builds in the flatpak branchname "stable", and it always passes --default-name=stable,
 so you don't need to specify a branch key. But if you do (not recommended), it must be "stable".