fix: fix spelling error

Author: anlyyao

packages/components/input/README.en-US.md

@@ -111,7 +111,7 @@ Name | Default Value | Description
 --td-input-label-text-color | @text-color-primary | - 
 --td-input-label-text-font | @font-body-large | - 
 --td-input-placeholder-text-color | @text-color-placeholder | - 
---td-input-placeholder-text-font | @font-body-larg | - 
+--td-input-placeholder-text-font | @font-body-large | - 
 --td-input-prefix-icon-color | @text-color-primary | - 
 --td-input-success-text-color | @success-color | - 
 --td-input-success-tips-color | @success-color | - 

packages/components/input/README.md

@@ -190,7 +190,7 @@ t-class-tips | 提示样式类
 --td-input-label-text-color | @text-color-primary | - 
 --td-input-label-text-font | @font-body-large | - 
 --td-input-placeholder-text-color | @text-color-placeholder | - 
---td-input-placeholder-text-font | @font-body-larg | - 
+--td-input-placeholder-text-font | @font-body-large | - 
 --td-input-prefix-icon-color | @text-color-primary | - 
 --td-input-success-text-color | @success-color | - 
 --td-input-success-tips-color | @success-color | - 

packages/components/input/input.less

@@ -17,7 +17,7 @@
 @input-border-left-space: var(--td-input-border-left-space, 32rpx);
 @input-border-right-space: var(--td-input-border-right-space, 0);
 @input-placeholder-text-color: var(--td-input-placeholder-text-color, @text-color-placeholder); // 输入框占位符文本颜色
-@input-placeholder-text-font: var(--td-input-placeholder-text-font, @font-body-large;); // 输入框占位符文本字体大小
+@input-placeholder-text-font: var(--td-input-placeholder-text-font, @font-body-large); // 输入框占位符文本字体大小
 @input-prefix-icon-color: var(--td-input-prefix-icon-color, @text-color-primary); // // 输入框前缀图标颜色
 @input-suffix-icon-color: var(--td-input-suffix-icon-color, @text-color-placeholder); // 输入框后缀图标颜色
 @input-label-text-color: var(--td-input-label-text-color, @text-color-primary); // 左侧文本颜色