[incubator-skywalking] branch master updated: Update overview.md (#1855)

[wu...@apache.org]

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wusheng pushed a commit to branch master
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The following commit(s) were added to refs/heads/master by this push:
     new 08f634b  Update overview.md (#1855)
08f634b is described below

commit 08f634b6666046db7a0c2e72b913e889186c57f0
Author: Brandon Fergerson <fe...@gmail.com>
AuthorDate: Wed Oct 31 21:13:31 2018 -0600

    Update overview.md (#1855)
    
    grammar fix
---
 docs/en/concepts-and-designs/overview.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/en/concepts-and-designs/overview.md b/docs/en/concepts-and-designs/overview.md
index a2d6d63..34fdae0 100644
--- a/docs/en/concepts-and-designs/overview.md
+++ b/docs/en/concepts-and-designs/overview.md
@@ -36,9 +36,9 @@ The SkyWalking is logically splittd into four parts: Probes, Platform backend, S
 from probe to UI. It also provides the pluggable capabilities for incoming formats(like Zipkin's), storage implementors and cluster
  management. You even can customize aggregation and analysis by using [Observability Analysis Language](oal.md).
 - The **Storage** is open. You can, either choose an existed implementor, such as ElasticSearch, H2 or MySQL cluster managed by 
-Sharding-Sphere, or implement your own. Of source, we are very appreciated to have your contributions for new storage implementors.
+Sharding-Sphere, or implement your own. Of course, we are very appreciated to have your contributions for new storage implementors.
 - The **UI** is cool and very powerful for SkyWalking end users. It is also customizable to match your customized backend.
 
 
 ## What is next?
-- Learn SkyWalking's [Project Goals](project-goals.md)
\ No newline at end of file
+- Learn SkyWalking's [Project Goals](project-goals.md)