Docs: Some tweaks (#6679)

* Update schema.rst

remove the extra "space"

* Update schema.rst

add `int16`

* Update edgeql.rst

add `int16`

* Update constraints.rst

User(x) -> Player(o)

* Update schema.rst

Fix "Line longer than 79 characters" test failure.

* Update edgeql.rst

Fix "Line longer than 79 characters" test failure.

docs/datamodel/constraints.rst

@@ -376,7 +376,7 @@ player picks in a color-based memory game:
       required name: str;
     }
 
-This constraint ensures that a single ``User`` cannot pick two ``Color``\s at
+This constraint ensures that a single ``Player`` cannot pick two ``Color``\s at
 the same ``@order``.
 
 .. _ref_datamodel_constraints_scalars:

docs/intro/edgeql.rst

@@ -31,7 +31,8 @@ EdgeDB has a rich primitive type system consisting of the following data types.
   * - Booleans
     - ``bool``
   * - Numbers
-    - ``int32`` ``int64`` ``float32`` ``float64`` ``bigint`` ``decimal``
+    - ``int16`` ``int32`` ``int64`` ``float32`` ``float64`` 
+      ``bigint`` ``decimal``
   * - UUID
     - ``uuid``
   * - JSON

docs/intro/schema.rst

@@ -22,7 +22,8 @@ types.
   * - Booleans
     - ``bool``
   * - Numbers
-    - ``int32`` ``int64`` ``float32`` ``float64`` ``bigint`` ``decimal``
+    - ``int16`` ``int32`` ``int64`` ``float32`` ``float64`` 
+      ``bigint`` ``decimal``
   * - UUID
     - ``uuid``
   * - JSON
@@ -366,7 +367,7 @@ understand backlink syntax is to split it into two parts:
 ``[is Movie]``
   This is a *type filter* that filters out all objects that aren't ``Movie``
   objects. A backlink still works without this filter, but could contain any 
-  other number of objects besides `` Movie`` objects.
+  other number of objects besides ``Movie`` objects.
 
 See :ref:`Schema > Computeds > Backlinks <ref_datamodel_links_backlinks>`.