Add .fcgi as an extension for script languages

lib/linguist/languages.yml

@@ -1354,6 +1354,7 @@ Lua:
   color: "#fa1fa1"
   extensions:
   - .lua
+  - .fcgi
   - .nse
   - .pd_lua
   - .rbxs
@@ -1690,6 +1691,7 @@ PHP:
   - .php
   - .aw
   - .ctp
+  - .fcgi
   - .module
   - .php3
   - .php4
@@ -1882,6 +1884,7 @@ Python:
   extensions:
   - .py
   - .cgi
+  - .fcgi
   - .gyp
   - .lmi
   - .pyde
@@ -2043,6 +2046,7 @@ Ruby:
   extensions:
   - .rb
   - .builder
+  - .fcgi
   - .gemspec
   - .god
   - .irbrc
@@ -2195,6 +2199,7 @@ Shell:
   - .bash
   - .bats
   - .cgi
+  - .fcgi
   - .tmux
   - .zsh
   interpreters: