Fix typos/grammar issues in README

PR #3174 <https://github.com/Genymobile/scrcpy/pull/3174>

Signed-off-by: Romain Vimont <rom@rom1v.com>

README.md

@@ -190,7 +190,7 @@ scrcpy --max-size 1024
 scrcpy -m 1024  # short version
 ```
 
-The other dimension is computed to that the device aspect ratio is preserved.
+The other dimension is computed so that the device aspect ratio is preserved.
 That way, a device in 1920×1080 will be mirrored at 1024×576.
 
 
@@ -789,7 +789,7 @@ break non-ASCII content.
 **WARNING:** Pasting the computer clipboard to the device (either via
 <kbd>Ctrl</kbd>+<kbd>v</kbd> or <kbd>MOD</kbd>+<kbd>v</kbd>) copies the content
 into the device clipboard. As a consequence, any Android application could read
-its content. You should avoid to paste sensitive content (like passwords) that
+its content. You should avoid pasting sensitive content (like passwords) that
 way.
 
 Some devices do not behave as expected when setting the device clipboard
@@ -838,7 +838,7 @@ scrcpy -K  # short version
 
 If it fails for some reason (for example because the device is not connected via
 USB), it automatically fallbacks to the default mode (with a log in the
-console). This allows to use the same command line options when connected over
+console). This allows using the same command line options when connected over
 USB and TCP/IP.
 
 In this mode, raw key events (scancodes) are sent to the device, independently
@@ -1062,7 +1062,7 @@ _³4th and 5th mouse buttons, if your mouse has them._
 _⁴For react-native apps in development, `MENU` triggers development menu._  
 _⁵Only on Android >= 7._
 
-Shortcuts with repeated keys are executted by releasing and pressing the key a
+Shortcuts with repeated keys are executed by releasing and pressing the key a
 second time. For example, to execute "Expand settings panel":
 
  1. Press and keep pressing <kbd>MOD</kbd>.
@@ -1105,7 +1105,7 @@ See [BUILD].
 
 ## Common issues
 
-See the [FAQ].md).
+See the [FAQ].
 
 [FAQ]: FAQ.md
 

README.zh-Hans.md

@@ -704,11 +704,11 @@ scrcpy --disable-screensaver
 
 #### 双指缩放
 
-模拟“双指缩放”：<kbd>Ctrl</kbd>+_按住并移动鼠标_。
+模拟“双指缩放”：<kbd>Ctrl</kbd>+_按下并拖动鼠标_。
 
-更准确的说，在按住鼠标左键时按住 <kbd>Ctrl</kbd>。直到松开鼠标左键，所有鼠标移动将以屏幕中心为原点，缩放或旋转内容 (如果应用支持)。
+在按住 <kbd>Ctrl</kbd> 时按下鼠标左键，直到松开鼠标左键前，移动鼠标会使屏幕内容相对于屏幕中心进行缩放或旋转 (如果应用支持)。
 
-实际上，_scrcpy_ 会在关于屏幕中心对称的位置上用“虚拟手指”发出触摸事件。
+具体来说，_scrcpy_ 会在鼠标位置，以及鼠标以屏幕中心镜像的位置分别生成触摸事件。
 
 #### 物理键盘模拟 (HID)