Add a new Execute Tests section to the Guide

Move the `Run` section from examples to the guide.
Also move the misplaced `Rerunning failed tests` section here.

docs/guide.rst

@@ -830,6 +830,40 @@ copied to the guest.
     ``finish`` steps yet.
 
 
+.. _execute-tests:
+
+Execute Tests
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+TODO: Here goes content of examples/run:
+https://tmt.readthedocs.io/en/stable/examples.html#run
+
+Rerunning failed tests of previously executed runs
+------------------------------------------------------------------
+
+Executing failed tests again after fixing them is now possible
+with `tmt run --all --again tests --failed-only`.
+
+This is only possible when you have the run directory available
+and `--id` argument provided (or use `--last`) as it needs the data from
+execute step to select only failed test cases. After new execute step,
+tmt will again merge the results from the previous run with the new ones
+to keep all the data for full report.
+
+.. code-block:: shell
+
+    $ tmt run
+    # Some tests fail, some pass
+
+    $ tmt run --last --again discover tests --failed-only
+    # Discover tests to rerun
+
+    $ tmt run --all --last --again tests --failed-only
+    # Run all failed tests again
+
+.. versionadded:: 1.34
+
+
 .. _multihost-testing:
 
 Multihost Testing
@@ -909,32 +943,6 @@ test result.
 
 __ https://github.com/teemtee/tmt/tree/main/tests/multihost/complete/data
 
-Rerunning failed tests of previously executed runs
-------------------------------------------------------------------
-
-Executing failed tests again after fixing them is now possible
-with `tmt run --all --again tests --failed-only`.
-
-This is only possible when you have the run directory available
-and `--id` argument provided (or use `--last`) as it needs the data from
-execute step to select only failed test cases. After new execute step,
-tmt will again merge the results from the previous run with the new ones
-to keep all the data for full report.
-
-.. code-block:: shell
-
-    $ tmt run
-    # Some tests fail, some pass
-
-    $ tmt run --last --again discover tests --failed-only
-    # Discover tests to rerun
-
-    $ tmt run --all --last --again tests --failed-only
-    # Run all failed tests again
-
-.. versionadded:: 1.34
-
-
 Synchronization Libraries
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