Convert TOML front matter to YAML (#49690)

Signed-off-by: Jack Baldry <jack.baldry@grafana.com>

docs/sources/alerting/notifications/_index.md

@@ -1,10 +1,17 @@
-+++
-aliases = ["/docs/grafana/latest/alerting/notifications/", "/docs/grafana/latest/alerting/unified-alerting/notifications/"]
-description = "Notification policies"
-keywords = ["grafana", "alerting", "guide", "notification policies", "routes"]
-title = "Notification policies"
-weight = 440
-+++
+---
+aliases:
+  - /docs/grafana/latest/alerting/notifications/
+  - /docs/grafana/latest/alerting/unified-alerting/notifications/
+description: Notification policies
+keywords:
+  - grafana
+  - alerting
+  - guide
+  - notification policies
+  - routes
+title: Notification policies
+weight: 440
+---
 
 # Notification policies
 

docs/sources/alerting/notifications/mute-timings.md

@@ -1,10 +1,18 @@
-+++
-aliases = ["/docs/grafana/latest/alerting/notifications/mute-timings/", "/docs/grafana/latest/alerting/unified-alerting/notifications/mute-timings/"]
-description = "Mute timings"
-keywords = ["grafana", "alerting", "guide", "mute", "mute timings", "mute time interval"]
-title = "Mute timings"
-weight = 450
-+++
+---
+aliases:
+  - /docs/grafana/latest/alerting/notifications/mute-timings/
+  - /docs/grafana/latest/alerting/unified-alerting/notifications/mute-timings/
+description: Mute timings
+keywords:
+  - grafana
+  - alerting
+  - guide
+  - mute
+  - mute timings
+  - mute time interval
+title: Mute timings
+weight: 450
+---
 
 # Mute timings