updata logo (#799)

diff --git a/img/ourusers/inspur@2x.png b/img/ourusers/inspur@2x.png
index 79c531c..4d95c99 100644
--- a/img/ourusers/inspur@2x.png
+++ b/img/ourusers/inspur@2x.png
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diff --git a/img/ourusers/nokia@2x.png b/img/ourusers/nokia@2x.png
index 4c2f227..a20a4f2 100644
--- a/img/ourusers/nokia@2x.png
+++ b/img/ourusers/nokia@2x.png
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diff --git a/img/ourusers/qianxin@2x.png b/img/ourusers/qianxin@2x.png
index 9fc42ce..b0cbee3 100644
--- a/img/ourusers/qianxin@2x.png
+++ b/img/ourusers/qianxin@2x.png
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diff --git a/img/ourusers/tencent@2x.png b/img/ourusers/tencent@2x.png
index 32698a2..e3290d3 100644
--- a/img/ourusers/tencent@2x.png
+++ b/img/ourusers/tencent@2x.png
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diff --git a/img/ourusers/xinlangweibo@2x.png b/img/ourusers/xinlangweibo@2x.png
index d0f68d9..8113b19 100644
--- a/img/ourusers/xinlangweibo@2x.png
+++ b/img/ourusers/xinlangweibo@2x.png
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