Match reindenting of those docs

src/main/java/com/google/devtools/build/lib/bazel/repository/starlark/StarlarkBaseExternalContext.java

@@ -640,8 +640,7 @@ private StructImpl completeDownload(PendingDownload pendingDownload)
                 easier but should be set before shipping. \
                 If provided, the repository cache will first be checked for a file with the \
                 given hash; a download will only be attempted if the file was not found in \
-                the cache. After a successful download, the file will be added to the \
-                cache.
+                the cache. After a successful download, the file will be added to the cache.
                 """),
         @Param(
             name = "executable",