Rename CodemirrorMode to CodeMirrorMode

It is a bit of a Rubyism to translate "CodeMirror Mode" into "codemirror_mode".
This is more in line with Go practices.

internal/code-generator/assets/languageInfo.go.tmpl

@@ -27,8 +27,8 @@ type LanguageInfo struct {
   TMScope string
   // AceMode is the name of the Ace Mode used for highlighting whenever a file is edited.
   AceMode string
-  // CodemirrorMode is the name of the CodeMirror Mode used for highlighting whenever a file is edited.
-  CodemirrorMode string
+  // CodeMirrorMode is the name of the CodeMirror Mode used for highlighting whenever a file is edited.
+  CodeMirrorMode string
   // Wrap is a boolean flag to enable line wrapping in an editor.
   Wrap bool
   // LanguageID is the Linguist-assigned numeric ID for the language.
@@ -67,7 +67,7 @@ var LanguageInfoByID = map[int]LanguageInfo{
     MimeType: "{{$info.MimeType}}",
     TMScope: "{{$info.TMScope}}",
     AceMode: "{{$info.AceMode}}",
-    CodemirrorMode: "{{$info.CodemirrorMode}}",
+    CodeMirrorMode: "{{$info.CodeMirrorMode}}",
     Wrap: {{$info.Wrap}},
     LanguageID: {{$info.LanguageID}},
   },

internal/code-generator/generator/langinfo.go

@@ -21,7 +21,7 @@ type languageInfo struct {
 	MimeType       string   `yaml:"codemirror_mime_type,omitempty,flow"`
 	TMScope        string   `yaml:"tm_scope"`
 	AceMode        string   `yaml:"ace_mode"`
-	CodemirrorMode string   `yaml:"codemirror_mode"`
+	CodeMirrorMode string   `yaml:"codemirror_mode"`
 	Wrap           bool     `yaml:"wrap"`
 	LanguageID     *int     `yaml:"language_id,omitempty"`
 }