修改介绍 (AgoraIO-Community#6)

* Update README.md

* Update README.zh.md

* Update README.md

* Update README.md

Author: jeffdzed

README.md

@@ -6,7 +6,7 @@ Agora SOLO is an open source speech codec, it was developed based on Silk with B
 Figure 1. Architecture of SOLO encoder：
 ![solo_encoder](https://github.com/AgoraIO-Community/Solo/blob/master/imag/solo_encoder.png)
 
-Figure 2. Architecture of Solo decoder：
+Figure 2. Architecture of SOLO decoder：
 ![solo_decoder](https://github.com/AgoraIO-Community/Solo/blob/master/imag/solo_decoder.png)
 
 
@@ -92,5 +92,5 @@ This software is under the MIT License (MIT).
 
 # Another words
 
-We have set up a solo exchange post in RTC forum to facilitate everyone's exchange and discussion. [The forum link is here](https://rtcdeveloper.com/t/topic/16270). Please feel free to commit your code or give us your idea if you find some problems. Let's make Solo as a long-term evolution codec.
+We have set up a SOLO exchange post in RTC forum to facilitate everyone's exchange and discussion. [The forum link is here](https://rtcdeveloper.com/t/topic/16270). Please feel free to commit your code or give us your idea if you find some problems. Let's make SOLO as a long-term evolution codec.
 

README.zh.md

@@ -95,4 +95,4 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 The MIT License（MIT）
 
 # 最后一句话
-我们在RTC论坛开设了Solo交流帖方便大家交流讨论，[论坛链接戳这里](https://rtcdeveloper.com/t/topic/16270)，如果你有任何问题或修改意见，请联系我们，以持续演进Solo。
+我们在RTC论坛开设了SOLO交流帖方便大家交流讨论，[论坛链接戳这里](https://rtcdeveloper.com/t/topic/16270)，如果你有任何问题或修改意见，请联系我们，以持续演进SOLO。