docs: simplify anonymized examples

Use clean generic names instead of repeated redaction placeholders.\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

marts_quotes.sql

@@ -9,17 +9,17 @@
 
 with source_quotes as (
     select
-        [REDACTED: quote_id column],
-        [REDACTED: line_item column],
-        [REDACTED: customer_id column],
-        [REDACTED: material_id column],
-        [REDACTED: quantity column],
-        [REDACTED: net_value column],
-        [REDACTED: quote_date column],
-        [REDACTED: sales_person_id column],
-        [REDACTED: source_timestamp column]
-    from [REDACTED: SOURCE_SCHEMA].[REDACTED: QUOTE_TABLE]
-    where [REDACTED: date_partition] >= dateadd(day, -1, current_date())
+        quote_id,
+        line_item,
+        customer_id,
+        material_id,
+        quantity,
+        net_value,
+        quote_date,
+        sales_person_id,
+        source_timestamp
+    from source_quotes
+    where quote_date >= dateadd(day, -1, current_date())
 ),
 
 enrich_product_portfolio as (
@@ -34,9 +34,9 @@ enrich_product_portfolio as (
         sq.sales_person_id,
         /* Product portfolio classification */
         case
-            when sq.material_id like '[REDACTED: pattern 1]%' then 'data-integration'
-            when sq.material_id like '[REDACTED: pattern 2]%' then 'automation'
-            when sq.material_id like '[REDACTED: pattern 3]%' then 'connectivity'
+            when sq.material_id like 'DI-%' then 'data-integration'
+            when sq.material_id like 'AU-%' then 'automation'
+            when sq.material_id like 'CO-%' then 'connectivity'
             else 'other'
         end as portfolio_code,
         pm.portfolio_name,
@@ -109,5 +109,3 @@ select
     sales_person_id,
     current_timestamp() as dbt_loaded_at
 from governance_flags
-
--- ponytail: materialized as table for chatbot + BI queries (not incremental yet; append-only refresh if needed later)