cache: documentation fix for cache-chunk-total-size - Fixes #2519

Signed-off-by: Anagh Kumar Baranwal <anaghk.dos@gmail.com>

CONTRIBUTING.md

@@ -71,7 +71,7 @@ Make sure you
 
 When you are done with that
 
-  git push origin my-new-feature
+    git push origin my-new-feature
 
 Go to the Github website and click [Create pull
 request](https://help.github.com/articles/creating-a-pull-request/).

backend/cache/cache.go

@@ -250,7 +250,7 @@ func NewFs(name, rootPath string, m configmap.Mapper) (fs.Fs, error) {
 		return nil, err
 	}
 	if opt.ChunkTotalSize < opt.ChunkSize*fs.SizeSuffix(opt.TotalWorkers) {
-		return nil, errors.Errorf("don't set cache-total-chunk-size(%v) less than cache-chunk-size(%v) * cache-workers(%v)",
+		return nil, errors.Errorf("don't set cache-chunk-total-size(%v) less than cache-chunk-size(%v) * cache-workers(%v)",
 			opt.ChunkTotalSize, opt.ChunkSize, opt.TotalWorkers)
 	}
 

docs/content/cache.md

@@ -293,7 +293,7 @@ connections. If the chunk size is changed, any downloaded chunks will be invalid
 
 **Default**: 5M
 
-#### --cache-total-chunk-size=SIZE ####
+#### --cache-chunk-total-size=SIZE ####
 
 The total size that the chunks can take up on the local disk. If `cache`
 exceeds this value then it will start to the delete the oldest chunks until 
@@ -304,7 +304,7 @@ it goes under this value.
 #### --cache-chunk-clean-interval=DURATION ####
 
 How often should `cache` perform cleanups of the chunk storage. The default value
-should be ok for most people. If you find that `cache` goes over `cache-total-chunk-size`
+should be ok for most people. If you find that `cache` goes over `cache-chunk-total-size`
 too often then try to lower this value to force it to perform cleanups more often.
 
 **Default**: 1m