docs: Fixed typo (#589)

Author: yukinakanaka

docs/basics/authentication.md

@@ -1,7 +1,7 @@
 # Authentication in Argo CD Image Updater
 
 There are several scenarios where Argo CD Image Updater needs to authenticate
-to external systems in order to fulfil its duties. 
+to external systems in order to fulfill its duties. 
 
 ## <a name="auth-kubernetes"></a>Authentication to Kubernetes
 
@@ -207,7 +207,7 @@ echo "someuser:s0mep4ssw0rd"
 
 When executing on Kubernetes, the script to be executed must exist in the
 Image Updater container's file system. You can either mount the script from
-a config map, or use an init container to copy it. Make sure that the script
+a configmap, or use an init container to copy it. Make sure that the script
 is executable.
 
 For example, if above script would exist at `/usr/local/bin/creds.sh`, it

docs/basics/update-methods.md

@@ -3,7 +3,7 @@
 ## Overview
 
 Argo CD Image Updater supports several methods to propagate new versions of the
-images to Argo CD. These methods are also refered to as *write back methods*.
+images to Argo CD. These methods are also referred to as *write back methods*.
 
 Currently, the following methods are supported:
 
@@ -162,7 +162,7 @@ argocd-image-updater.argoproj.io/git-branch: main
 
 ### <a name="method-git-base-commit-branch"></a>Specifying a separate base and commit branch
 
-By default, Argo CD Imager Updater will checkout, commit, and push back to the
+By default, Argo CD Image Updater will checkout, commit, and push back to the
 same branch specified above. There are many scenarios where this is not
 desired or possible, such as when the default branch is protected. You can
 add a separate write-branch by modifying `argocd-image-updater.argoproj.io/git-branch`

docs/basics/update.md

@@ -18,7 +18,7 @@ The workflow of Argo CD Image Updater can be described as follows:
   annotation holds a list of image names that should be updated, and is a
   mandatory annotation for Argo CD Image Updater to indicate it should
   process this `Application`. Read more about the syntax expected in this
-  annotations's value in the [marking images for update](#TODO)
+  annotation's value in the [marking images for update](#TODO)
   section in this doc.
 
 * For each image found in the list, Argo CD Image Updater will first check

docs/install/reference.md

@@ -123,7 +123,7 @@ Only process applications that have a valid annotation and match the given
 syntax of `key=value`. For e.g, `custom.label/name=xyz` would be a valid label
 that can be supplied through this parameter. Any applications carrying this 
 exact label will be considered as candidates for image updates. This parameter
-currently does not support patten matching on label values (e.g `customer.label/name=*-staging`)
+currently does not support pattern matching on label values (e.g `customer.label/name=*-staging`)
 and only accepts a single label to match applications against. 
 
 **--max-concurrency *number* **