Docs: Replace ampersands with and (#19609)

docs/sources/features/panels/graph.md

@@ -17,7 +17,7 @@ The main panel in Grafana is simply named Graph. It provides a very rich set of
 
 1. Clicking the title for a panel exposes a menu.  The `edit` option opens additional configuration
 options for the panel.
-2. Click to open color & axis selection.
+2. Click to open color and axis selection.
 3. Click to only show this series. Shift/Ctrl + click to hide series.
 
 ## General
@@ -146,7 +146,7 @@ Display styles control visual properties of the graph.
    - Individual: the value for the series you hover over
    - Cumulative - sum of series below plus the series you hover over
 
-#### Stacking & Null value
+#### Stacking and Null value
 
 If there are multiple series, they can be displayed as a group.
 
@@ -186,7 +186,7 @@ Time regions allow you to highlight certain time regions of the graph to make it
 
 The time range tab allows you to override the dashboard time range and specify a panel specific time.
 Either through a relative from now time option or through a timeshift.
-Panel time overrides & timeshift are described in more detail [here]({{< relref "reference/timerange.md#panel-time-overrides-timeshift" >}}).
+Panel time overrides and timeshift are described in more detail [here]({{< relref "reference/timerange.md#panel-time-overrides-timeshift" >}}).
 
 ### Data link