Replace U+2192 arrows in resources framework docstrings

salt/minion.py:_collect_resource_grains and
salt/utils/resource_registry.py:parse_srn / _ResourceIndexStore had
"->" rendered as the Unicode arrow U+2192 ("->"), which doesn't encode
to Windows cp1252.  Caught by the existing check_cp1252_docstrings
hook on the post-rebase pre-commit run.

Same precedent and sweep as commit history "Replace cp1252-
incompatible chars in docstrings" -- ASCII "->" is the agreed
substitute.

Author: Daniel A. Wozniak

salt/minion.py

@@ -3587,7 +3587,7 @@ def _collect_resource_grains(self):
         For each ``(resource_type, resource_id)`` pair, sets the per-call
         :data:`salt.loader.context.resource_ctxvar` and invokes
         ``resource_funcs[f"{type}.grains"]()``. Returns a mapping keyed by
-        composite SRN ``"<type>:<id>"`` → grain dict, suitable for shipping
+        composite SRN ``"<type>:<id>"`` -> grain dict, suitable for shipping
         to the master in :meth:`_register_resources_with_master`.
 
         Resource types without a ``grains`` callable are skipped silently.

salt/utils/resource_registry.py

@@ -154,8 +154,8 @@ def parse_srn(expression):
     A full Salt Resource Name (SRN) has the form ``<type>:<id>``. A bare
     expression contains only a type with no colon.
 
-    ``parse_srn("vcf_host")``          → ``{"type": "vcf_host", "id": None}``
-    ``parse_srn("vcf_host:esxi-01")``  → ``{"type": "vcf_host", "id": "esxi-01"}``
+    ``parse_srn("vcf_host")``          -> ``{"type": "vcf_host", "id": None}``
+    ``parse_srn("vcf_host:esxi-01")``  -> ``{"type": "vcf_host", "id": "esxi-01"}``
 
     :param str expression: A bare resource type or a full SRN.
     :rtype: dict
@@ -242,7 +242,7 @@ class _ResourceIndexStore:
     — writers bump the file's ``mtime`` on every ``put``/``delete`` (see
     :meth:`MmapCache._touch_mtime`), so the signal catches both:
 
-    * compactions (``os.replace`` → new inode), and
+    * compactions (``os.replace`` -> new inode), and
     * in-place mutations from other worker processes (same inode, fresh mtime).
 
     Rebuilds are serialised under an internal lock so concurrent readers