change M5StickV some description

docs/en/core/m5stickv.md

@@ -96,6 +96,10 @@ It is able to perform convolutional neural network calculations at low power con
       <td>Camera</td>
       <td>OV7740</td>
    </tr>
+   <tr>
+      <td>FOV</td>
+      <td>55deg</td>
+   </tr>
    <tr>
       <td>PMU</td>
       <td>AXP192</td>
@@ -408,7 +412,7 @@ The chip contains a high-performance, low power RISC-V ISA-based dual core 64-bi
    </thead> 
    <tbody>
       <tr>
-         <td>2017.7</td>
+         <td>2019.7</td>
          <td>Initial public release</td>
          <td>/</td>
       </tr>

docs/en/unit/unitv.md

@@ -87,6 +87,10 @@ Support MicroPython development environment, which makes the program code more c
       <td>Image Sensor</td>
       <td>OV2640</td>
    </tr>
+   <tr>
+      <td>FOV</td>
+      <td>65deg</td>
+   </tr>
    <tr>
       <td>External storage</td>
       <td>TF Card/Micro SD</td>

docs/zh_CN/core/m5stickv.md

@@ -91,6 +91,10 @@ M5stickV AI 摄像头具备机器视觉能力，配备OmniVision OV7740图像传
       <td>摄像头</td>
       <td>OV7740</td>
    </tr>
+   <tr>
+      <td>FOV</td>
+      <td>55°</td>
+   </tr>
    <tr>
       <td>PMU</td>
       <td>AXP192</td>

docs/zh_CN/unit/unitv.md

@@ -76,6 +76,10 @@
       <td>摄像头</td>
       <td>OV2640</td>
    </tr>
+   <tr>
+      <td>FOV</td>
+      <td>65°</td>
+   </tr>
    <tr>
       <td>外部存储</td>
       <td>TF Card/Micro SD</td>