builders.sh: Typo fixes in var expansion

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I5ca19a4e0b0f99ca20654219eadb89bbc6088427
diff --git a/misra-docker-images/builders.sh b/misra-docker-images/builders.sh
index 777c1e6..5b6ad0a 100644
--- a/misra-docker-images/builders.sh
+++ b/misra-docker-images/builders.sh
@@ -26,10 +26,10 @@
     test -d $image  && test -f $image/build.sh && \
     (
         set -ex
-        echo "Building image: misra:$${image}"
+        echo "Building image: misra:${image}"
         cd $image
         ./build.sh
-        echo "Upoading image: misra:$${image}"
-        docker push $ECR/misra:image$
+        echo "Upoading image: misra:${image}"
+        docker push $ECR/misra:$image
     )
 done