Docs: Update keyboard shortcuts formatting (#19637)

* Docs: Update keyboard shortcuts formatting in docs

* Docs: Update keystroke separators

* Docs: Remove spaces in keyboard shortcuts

docs/sources/features/explore/index.md

@@ -63,7 +63,7 @@ On the left-hand side of the query field is a `Metrics` button, clicking on this
 
 The Query field supports autocomplete for metric names, function and works mostly the same way as the standard Prometheus query editor. Press the enter key to execute a query.
 
-The autocomplete menu can be trigger by pressing Ctrl + Space. The Autocomplete menu contains a new History section with a list of recently executed queries.
+The autocomplete menu can be trigger by pressing Ctrl+Space. The Autocomplete menu contains a new History section with a list of recently executed queries.
 
 Suggestions can appear under the query field - click on them to update your query with the suggested change.
 

docs/sources/features/panels/graph.md

@@ -18,7 +18,7 @@ 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 and axis selection.
-3. Click to only show this series. Shift/Ctrl + click to hide series.
+3. Click to only show this series. Shift/Ctrl+Click to hide series.
 
 ## General
 

docs/sources/features/shortcuts.md

@@ -50,4 +50,4 @@ Hit `?` on your keyboard to open the shortcuts help modal.
 - `t`	Move time range back
 - `t`	Move time range forward
 
-mod = CTRL on Windows or Linux and CMD key on macOS
+mod = Ctrl on Windows or Linux and Cmd key on macOS