Remove outdated Belt.Array documentation regarding stdlib's Array.get (#7570)

* Remove outdated Belt.Array documentation regarding stdlib's Array.get

* Update completion snapshot test expected output

Author: mediremi

runtime/Belt_Array.resi

@@ -14,15 +14,6 @@
 
 /***
 Utilities for `Array` functions.
-
-### Note about index syntax
-
-Code like `arr[0]` does *not* compile to JavaScript `arr[0]`. Reason transforms
-the `[]` index syntax into a function: `Array.get(arr, 0)`. By default, this
-uses the default standard library's `Array.get` function, which may raise an
-exception if the index isn't found. If you `open Belt`, it will use the
-`Belt.Array.get` function which returns options instead of raising exceptions. 
-[See this for more information](../belt.mdx#array-access-runtime-safety).
 */
 
 type t<'a> = array<'a>

tests/analysis_tests/tests/src/expected/CompletionResolve.res.txt

@@ -1,5 +1,5 @@
 Completion resolve: Belt_Array
-"\nUtilities for `Array` functions.\n\n### Note about index syntax\n\nCode like `arr[0]` does *not* compile to JavaScript `arr[0]`. Reason transforms\nthe `[]` index syntax into a function: `Array.get(arr, 0)`. By default, this\nuses the default standard library's `Array.get` function, which may raise an\nexception if the index isn't found. If you `open Belt`, it will use the\n`Belt.Array.get` function which returns options instead of raising exceptions. \n[See this for more information](../belt.mdx#array-access-runtime-safety).\n"
+"\nUtilities for `Array` functions.\n"
 
 Completion resolve: ModuleStuff
 " This is a top level module doc. "