Update wording and fix spell check

Flow.Launcher/Languages/en.xaml

@@ -106,17 +106,17 @@
     <system:String x:Key="ShouldUsePinyin">Search with Pinyin</system:String>
     <system:String x:Key="ShouldUsePinyinToolTip">Allows using Pinyin to search. Pinyin is the standard system of romanized spelling for translating Chinese.</system:String>
     <system:String x:Key="ShouldUseDoublePinyin">Use Double Pinyin</system:String>
-    <system:String x:Key="ShouldUseDoublePinyinToolTip">Allows using Double Pinyin to search. Double Pinyin is a variation of Pinyin that uses two characters.</system:String>
+    <system:String x:Key="ShouldUseDoublePinyinToolTip">Use Double Pinyin instead of Full Pinyin to search.</system:String>
     <system:String x:Key="DoublePinyinSchema">Double Pinyin Schema</system:String>
     <system:String x:Key="DoublePinyinSchemasXiaoHe">Xiao He</system:String>
     <system:String x:Key="DoublePinyinSchemasZiRanMa">Zi Ran Ma</system:String>
     <system:String x:Key="DoublePinyinSchemasWeiRuan">Wei Ruan</system:String>
     <system:String x:Key="DoublePinyinSchemasZhiNengABC">Zhi Neng ABC</system:String>
     <system:String x:Key="DoublePinyinSchemasZiGuangPinYin">Zi Guang Pin Yin</system:String>
     <system:String x:Key="DoublePinyinSchemasPinYinJiaJia">Pin Yin Jia Jia</system:String>
     <system:String x:Key="DoublePinyinSchemasXingKongJianDao">Xing Kong Jian Dao</system:String>
     <system:String x:Key="DoublePinyinSchemasDaNiu">Da Niu</system:String>
     <system:String x:Key="DoublePinyinSchemasXiaoLang">Xiao Lang</system:String>
 
     <system:String x:Key="AlwaysPreview">Always Preview</system:String>
     <system:String x:Key="AlwaysPreviewToolTip">Always open preview panel when Flow activates. Press {0} to toggle preview.</system:String>