update elements and fix some bugs

lib/src/prism/components/prism-less.min.js

Index: lib/src/prism/components/prism-less.min.js
diff --git a/lib/src/prism/components/prism-less.min.js b/lib/src/prism/components/prism-less.min.js
index e470eab9b0344f45e909ed7f4664dd37b24fb654..c3847a769ac2a4e0a853dc818fb66b364fb3a4b3 100644
--- a/lib/src/prism/components/prism-less.min.js
+++ b/lib/src/prism/components/prism-less.min.js
@@ -1 +1 @@
-Prism.languages.less=Prism.languages.extend("css",{comment:[/\/\*[\w\W]*?\*\//,{pattern:/(^|[^\\])\/\/.*/,lookbehind:!0}],atrule:{pattern:/@[\w-]+?(?:\([^{}]+\)|[^(){};])*?(?=\s*\{)/i,inside:{punctuation:/[:()]/}},selector:{pattern:/(?:@\{[\w-]+\}|[^{};\s@])(?:@\{[\w-]+\}|\([^{}]*\)|[^{};@])*?(?=\s*\{)/,inside:{variable:/@+[\w-]+/}},property:/(\b|\B)(?:@\{[\w-]+\}|[\w-])+(?:\+_?)?(?=\s*:)/i,punctuation:/[{}();:,]/,operator:/[+\-*\/]/}),Prism.languages.insertBefore("less","punctuation",{"function":Prism.languages.less.function}),Prism.languages.insertBefore("less","property",{variable:[{pattern:/@[\w-]+\s*:/,inside:{punctuation:/:/}},/@@?[\w-]+/],"mixin-usage":{pattern:/([{;]\s*)[.#](?!\d)[\w-]+.*?(?=[(;])/,lookbehind:!0,alias:"function"}});
+Prism.languages.less=Prism.languages.extend("css",{comment:[/\/\*[\w\W]*?\*\//,{pattern:/(^|[^\\])\/\/.*/,lookbehind:!0}],atrule:{pattern:/@[\w-]+?(?:\([^{}]+\)|[^(){};])*?(?=\s*\{)/i,inside:{punctuation:/[:()]/}},selector:{pattern:/(?:@\{[\w-]+\}|[^{};\s@])(?:@\{[\w-]+\}|\([^{}]*\)|[^{};@])*?(?=\s*\{)/,inside:{variable:/@+[\w-]+/}},property:/(?:@\{[\w-]+\}|[\w-])+(?:\+_?)?(?=\s*:)/i,punctuation:/[{}();:,]/,operator:/[+\-*\/]/}),Prism.languages.insertBefore("less","punctuation",{"function":Prism.languages.less.function}),Prism.languages.insertBefore("less","property",{variable:[{pattern:/@[\w-]+\s*:/,inside:{punctuation:/:/}},/@@?[\w-]+/],"mixin-usage":{pattern:/([{;]\s*)[.#](?!\d)[\w-]+.*?(?=[(;])/,lookbehind:!0,alias:"function"}});