docs: update example output (#504)

Author: sbdchd

README.md

@@ -44,42 +44,42 @@ warning[prefer-bigint-over-int]: Using 32-bit integer fields can result in hitti
  --> example.sql:6:10
   |
 6 |     "id" serial NOT NULL PRIMARY KEY,
-  |          ^^^^^^
+  |          ------
   |
   = help: Use 64-bit integer values instead to prevent hitting this limit.
 warning[prefer-identity]: Serial types make schema, dependency, and permission management difficult.
  --> example.sql:6:10
   |
 6 |     "id" serial NOT NULL PRIMARY KEY,
-  |          ^^^^^^
+  |          ------
   |
   = help: Use Identity columns instead.
 warning[prefer-text-field]: Changing the size of a `varchar` field requires an `ACCESS EXCLUSIVE` lock, that will prevent all reads and writes to the table.
  --> example.sql:7:13
   |
 7 |     "alpha" varchar(100) NOT NULL
-  |             ^^^^^^^^^^^^
+  |             ------------
   |
   = help: Use a `TEXT` field with a `CHECK` constraint.
 warning[require-concurrent-index-creation]: During normal index creation, table updates are blocked, but reads are still allowed.
   --> example.sql:10:1
    |
 10 | CREATE INDEX "field_name_idx" ON "table_name" ("field_name");
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   | ------------------------------------------------------------
    |
    = help: Use `CONCURRENTLY` to avoid blocking writes.
 warning[constraint-missing-not-valid]: By default new constraints require a table scan and block writes to the table while that scan occurs.
   --> example.sql:12:24
    |
 12 | ALTER TABLE table_name ADD CONSTRAINT field_name_constraint UNIQUE (field_name);
-   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |                        --------------------------------------------------------
    |
    = help: Use `NOT VALID` with a later `VALIDATE CONSTRAINT` call.
 warning[disallowed-unique-constraint]: Adding a `UNIQUE` constraint requires an `ACCESS EXCLUSIVE` lock which blocks reads and writes to the table while the index is built.
   --> example.sql:12:28
    |
 12 | ALTER TABLE table_name ADD CONSTRAINT field_name_constraint UNIQUE (field_name);
-   |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |                            ----------------------------------------------------
    |
    = help: Create an index `CONCURRENTLY` and create the constraint using the index.
 

docs/docs/quick_start.md

@@ -57,13 +57,13 @@ warning[constraint-missing-not-valid]: By default new constraints require a tabl
  --> example-migration.sql:2:24
   |
 2 | ALTER TABLE table_name ADD CONSTRAINT field_name_constraint UNIQUE (field_name);
-  |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  |                        --------------------------------------------------------
   |
 warning[disallowed-unique-constraint]: Adding a `UNIQUE` constraint requires an `ACCESS EXCLUSIVE` lock which blocks reads and writes to the table while the index is built.
  --> example-migration.sql:2:28
   |
 2 | ALTER TABLE table_name ADD CONSTRAINT field_name_constraint UNIQUE (field_name);
-  |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  |                            ----------------------------------------------------
   |
   = help: Create an index CONCURRENTLY and create the constraint using the index.