Update preset feature settings in yml files and README

Simplified preset settings in 'preset_features.yml' and 'preset_usage.yml' files by combining several lines into one. These changes enhance the readability and maintainability of the code. Additionally, alignments and comments in 'preset_features.yml' and README file were adjusted for consistency and better readability.

README.md

@@ -1139,18 +1139,17 @@ columns:
   - preset: users/email
   - preset: users/full_name
   - preset: users/birthday
-  - name: phone                   # Rename the column. "phone_number" => "phone".
-    preset: users/phone_number
-  - preset: users/password
-    rules:
-      length_min: 10              # Overridden value to force a strong password.
+  - preset: users/phone_number    # Rename the column. "phone_number" => "phone".
+    name: phone
+  - preset: users/password        # Overridden value to force a strong password.
+    rules: { length_min: 10 }
   - name: admin_note              # New column specific only this schema.
     description: Admin note
     rules:
       not_empty: true
       length_min: 1
       length_max: 10
-    aggregate_rules:              # In practice this will be a rare case, but the opportunity is there.
+    aggregate_rules: # In practice this will be a rare case, but the opportunity is there.
       preset: db/id               # Take only aggregate rules from the preset.
       is_unique: true             # Added new specific aggregate rule.
 ```

schema-examples/preset_usage.yml

@@ -29,17 +29,16 @@ columns:
   - preset: users/email
   - preset: users/full_name
   - preset: users/birthday
-  - name: phone                   # Rename the column. "phone_number" => "phone".
-    preset: users/phone_number
-  - preset: users/password
-    rules:
-      length_min: 10              # Overridden value to force a strong password.
+  - preset: users/phone_number    # Rename the column. "phone_number" => "phone".
+    name: phone
+  - preset: users/password        # Overridden value to force a strong password.
+    rules: { length_min: 10 }
   - name: admin_note              # New column specific only this schema.
     description: Admin note
     rules:
       not_empty: true
       length_min: 1
       length_max: 10
-    aggregate_rules:              # In practice this will be a rare case, but the opportunity is there.
+    aggregate_rules: # In practice this will be a rare case, but the opportunity is there.
       preset: db/id               # Take only aggregate rules from the preset.
       is_unique: true             # Added new specific aggregate rule.