Fix some spelling error (#5032)

Signed-off-by: JoeWrightss <zhoulin.xie@daocloud.io>

_proto/README.md

@@ -6,5 +6,5 @@ Packages
  - `hapi.chart` Complete serialization of Heml charts
  - `hapi.release` Information about installed charts (Releases) such as metadata about when they were installed, their status, and how they were configured.
  - `hapi.services.rudder` Definition for the ReleaseModuleService used by Tiller to manipulate releases on a given node
- - `hapi.services.tiller` Definition of the ReleaseService provoded by Tiller and used by Helm clients to manipulate releases cluster wide.
+ - `hapi.services.tiller` Definition of the ReleaseService provided by Tiller and used by Helm clients to manipulate releases cluster wide.
  - `hapi.version` Version meta-data used by tiller to express it's version

pkg/chartutil/doc.go

@@ -25,7 +25,7 @@ A chart can be represented on the file system in one of two ways:
 	- As a tarred gzipped file containing a directory that then contains a
 	Chart.yaml file.
 
-This package provides utilitites for working with those file formats.
+This package provides utilities for working with those file formats.
 
 The preferred way of loading a chart is using 'chartutil.Load`: