docs: smaller logo (200px)

docs/index.rst

@@ -8,8 +8,8 @@ Welcome to Tendermint!
 
 
 .. image:: assets/tmint-logo-blue.png
-   :height: 500px
-   :width: 500px
+   :height: 200px
+   :width: 200px
    :align: center
 
 Tendermint 101

docs/using-tendermint.rst

@@ -387,7 +387,7 @@ Additionally, you must set ``addrbook_strict=false`` in the
 ``config.toml``, otherwise Tendermint's p2p library will deny making
 connections to peers with the same IP address.
 
-Ugrading
+Upgrading
 ~~~~~~~~
 
 The tendermint development cycle includes a lot of breaking changes. Upgrading from