Docs: add minimal docs explaining how to use the LogQL Analyzer (#6900)

docs/sources/logql/analyzer.md

@@ -1,5 +1,7 @@
 ---
 title: LoqQL Analyzer
+menuTitle: LoqQL Analyzer
+description: The LogQL Analyzer is an inline educational tool for experimenting with writing LogQL queries.
 weight: 60
 ---
 
@@ -8,6 +10,21 @@ weight: 60
 
 # LogQL Analyzer
 
+The LogQL Analyzer is an inline tool for experimenting with writing LogQL queries.
+
+Chose the log line format with the radio buttons.
+A set of example log lines are included for each format.
+
+Use the provided example log lines, or copy and paste your own log lines into the example log lines box.
+
+Use the provided example query, or enter your own query.
+The [log stream selector](../log_queries/#log-stream-selector) remains fixed for all possible example queries.
+Modify the remainder of the log line and click on the **Run query** button
+to run the entered query against the example log lines. 
+
+The results output provides details for each example log line.
+Clicking on a line in the results pane expands the details, showing why the line is or is not included in the query result set.
+
 <main class="logql-analyzer">
     <section class="logs-source panel-container">
         <div class="logs-source__header">