Fix table formatting in the "Version ranges" doc (#1462)

Currently this document renders fine on GitHub,
but the table is broken in mkdocs website.

Signed-off-by: Mikalai Radchuk <mradchuk@redhat.com>

Author: m1kola

docs/concepts/version-ranges.md

@@ -41,6 +41,7 @@ If you use a wildcard character with the `=` operator, you define a patch level
 This is equivalent to making a tilde range comparison.
 
 *Example comparisons with wildcard characters*
+
 | Comparison | Equivalent          |
 |------------|---------------------|
 | `1.2.x`    | `>= 1.2.0, < 1.3.0` |
@@ -55,6 +56,7 @@ You can use the tilde (`~`) operator to make patch release comparisons.
 This is useful when you want to specify a minor version up to the next major version.
 
 *Example patch release comparisons*
+
 | Comparison | Equivalent          |
 |------------|---------------------|
 | `~1.2.3`   | `>= 1.2.3, < 1.3.0` |