remove duplicate text and upgrade build version

.github/workflows/build-container.yml

@@ -27,13 +27,14 @@ jobs:
             support: latest
     steps:
       - name: Build image
-        uses: JasonN3/build-action@action
+        uses: ublue-os/build-action@1.0.1
         with:
           image_name: isogenerator
           image_variant: main
           version: ${{ matrix.version }}
           support: ${{ matrix.support }}
           signing_key: ${{ secrets.SIGNING_SECRET }}
+          target: main
         continue-on-error: false
 
   check:

README.md

@@ -43,7 +43,7 @@ The following variables can be used to customize the create image.
     Default Value: *VERSION*
 - VARIANT  
     Source container variant
-    Source container variant. Available options can be found by running `dnf provides system-release`. Variant will be the third item in the package name. Example: `fedora-release-kinoite-39-34.noarch` will be kinonite  
+    Available options can be found by running `dnf provides system-release`. Variant will be the third item in the package name. Example: `fedora-release-kinoite-39-34.noarch` will be kinonite  
     Default Value: Silverblue
 - WEB_UI  
     Enable Anaconda WebUI