test(rust): revert back change

Signed-off-by: bkioshn <[email protected]>

Author: bkioshn

rust/Earthfile

@@ -64,7 +64,7 @@ build:
         --coverage="cat-libs.coverage.info" \
         --docs="true"
 
-    SAVE ARTIFACT target/doc doc
+    SAVE ARTIFACT target/$TARGETARCH/doc doc
     SAVE ARTIFACT target/release/cbork cbork
 
 # build-src-check: Check for any caching issues with the source we are building against.