glsl: Fix typo fragement -> fragment

Fixes: 94d669b0d2 ("glsl: enforce fragment shader input restrictions in
       GLSL ES 3.10")

Signed-off-by: Andreas Boll <andreas.boll.dev@gmail.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

src/compiler/glsl/ast_to_hir.cpp

@@ -5260,7 +5260,7 @@ ast_declarator_list::hir(exec_list *instructions,
                      if (var->type->fields.structure[i].type->is_array() ||
                          var->type->fields.structure[i].type->is_record())
                         _mesa_glsl_error(&loc, state,
-                                         "fragement shader input cannot have "
+                                         "fragment shader input cannot have "
                                          "a struct that contains an "
                                          "array or struct");
                   }