bold Note

Author: huaxingao

docs/sql-ref-identifier.md

@@ -30,7 +30,7 @@ An identifier is a string used to identify a database object such as a table, vi
 ```sql
 { letter | digit | '_' } [ , ... ]
 ```
-Note: If `spark.sql.ansi.enabled` is set to true, ANSI SQL reserved keywords cannot be used as identifiers. For more details, please refer to [ANSI Compliance](sql-ref-ansi-compliance.html).
+**Note:** If `spark.sql.ansi.enabled` is set to true, ANSI SQL reserved keywords cannot be used as identifiers. For more details, please refer to [ANSI Compliance](sql-ref-ansi-compliance.html).
 
 #### Delimited Identifier
 

docs/sql-ref-literals.md

@@ -345,7 +345,7 @@ DATE { 'yyyy' |
        'yyyy-[m]m-[d]d' |
        'yyyy-[m]m-[d]d[T]' }
 ```
-Note: defaults to `01` if month or day is not specified.
+**Note:** defaults to `01` if month or day is not specified.
 
 ##### Examples
 
@@ -386,7 +386,7 @@ TIMESTAMP { 'yyyy' |
             'yyyy-[m]m-[d]d[T][h]h:[m]m:[s]s[.]' |
             'yyyy-[m]m-[d]d[T][h]h:[m]m:[s]s.[ms][ms][ms][us][us][us][zone_id]'}
 ```
-Note: defaults to `00` if hour, minute or second is not specified.
+**Note:** defaults to `00` if hour, minute or second is not specified.
 `zone_id` should have one of the forms:
 * Z - Zulu time zone UTC+0
 * `+|-[h]h:[m]m`
@@ -397,7 +397,7 @@ Note: defaults to `00` if hour, minute or second is not specified.
   * `+|-hhmmss`
 * Region-based zone IDs in the form `area/city`, such as `Europe/Paris`
 
-Note: defaults to the session local timezone (set via `spark.sql.session.timeZone`) if `zone_id` is not specified.
+**Note:** defaults to the session local timezone (set via `spark.sql.session.timeZone`) if `zone_id` is not specified.
 
 ##### Examples
 

docs/sql-ref-syntax-qry-sampling.md

@@ -26,7 +26,7 @@ The `TABLESAMPLE` statement is used to sample the table. It supports the followi
   * `TABLESAMPLE`(x `PERCENT`): Sample the table down to the given percentage. Note that percentages are defined as a number between 0 and 100.
   * `TABLESAMPLE`(`BUCKET` x `OUT OF` y): Sample the table down to a `x` out of `y` fraction.
 
-Note: `TABLESAMPLE` returns the approximate number of rows or fraction requested.
+**Note:** `TABLESAMPLE` returns the approximate number of rows or fraction requested.
 
 ### Syntax