Add SuperHTML linter for HTML (#5055)

doc/ale-html.txt

@@ -206,6 +206,24 @@ g:ale_html_stylelint_use_global
   See |ale-integrations-local-executables|
 
 
+===============================================================================
+superhtml                                                  *ale-html-superhtml*
+
+g:ale_html_superhtml_executable               *g:ale_html_superhtml_executable*
+                                              *b:ale_html_superhtml_executable*
+  Type: |String|
+  Default: `'superhtml'`
+
+  This variable can be changed to use a different executable for superhtml.
+
+g:ale_html_superhtml_use_global               *g:ale_html_superhtml_use_global*
+                                              *b:ale_html_superhtml_use_global*
+  Type: |Number|
+  Default: `get(g:, 'ale_use_global_executables', 0)`
+
+  See |ale-integrations-local-executables|
+
+
 ===============================================================================
 tidy                                                            *ale-html-tidy*
 

doc/ale-supported-languages-and-tools.txt

@@ -289,6 +289,7 @@ Notes:
   * `prettier`
   * `proselint`
   * `rustywind`
+  * `superhtml`
   * `tidy`
   * `write-good`
 * HTML Angular

doc/ale.txt

@@ -3586,6 +3586,7 @@ documented in additional help files.
     prettier..............................|ale-html-prettier|
     rustywind.............................|ale-html-rustywind|
     stylelint.............................|ale-html-stylelint|
+    superhtml.............................|ale-html-superhtml|
     tidy..................................|ale-html-tidy|
     vscodehtml............................|ale-html-vscode|
     write-good............................|ale-html-write-good|