update elements and fix some bugs

lib/src/prism/components/prism-nim.js

+Prism.languages.nim = {
+        'comment': /#.*/,
+        // Double-quoted strings can be prefixed by an identifier (Generalized raw string literals)
+        // Character literals are handled specifically to prevent issues with numeric type suffixes
+        'string': /(?:(?:\b(?!\d)(?:\w|\\x[8-9a-fA-F][0-9a-fA-F])+)?(?:"""[\s\S]*?"""(?!")|"(?:\\[\s\S]|""|[^"\\])*")|'(?:\\(?:\d+|x[\da-fA-F]{2}|.)|[^'])')/,
+        // The negative look ahead prevents wrong highlighting of the .. operator
+        'number': /\b(?:0[xXoObB][\da-fA-F_]+|\d[\d_]*(?:(?!\.\.)\.[\d_]*)?(?:[eE][+-]?\d[\d_]*)?)(?:'?[iuf]\d*)?/,
+        'keyword': /\b(?:addr|as|asm|atomic|bind|block|break|case|cast|concept|const|continue|converter|defer|discard|distinct|do|elif|else|end|enum|except|export|finally|for|from|func|generic|if|import|include|interface|iterator|let|macro|method|mixin|nil|object|out|proc|ptr|raise|ref|return|static|template|try|tuple|type|using|var|when|while|with|without|yield)\b/,
+        'function': {
+                pattern: /(?:(?!\d)(?:\w|\\x[8-9a-fA-F][0-9a-fA-F])+|`[^`\r\n]+`)\*?(?:\[[^\]]+\])?(?=\s*\()/,
+                inside: {
+                        'operator': /\*$/
+                }
+        },
+        // We don't want to highlight operators inside backticks
+        'ignore': {
+                pattern: /`[^`\r\n]+`/,
+                inside: {
+                        'punctuation': /`/
+                }
+        },
+        'operator': {
+                // Look behind and look ahead prevent wrong highlighting of punctuations [. .] {. .} (. .)
+                // but allow the slice operator .. to take precedence over them
+                // One can define his own operators in Nim so all combination of operators might be an operator.
+                pattern: /(^|[({\[](?=\.\.)|(?![({\[]\.).)(?:(?:[=+\-*\/<>@$~&%|!?^:\\]|\.\.|\.(?![)}\]]))+|\b(?:and|div|of|or|in|is|isnot|mod|not|notin|shl|shr|xor)\b)/m,
+                lookbehind: true
+        },
+        'punctuation': /[({\[]\.|\.[)}\]]|[`(){}\[\],:]/
+};