Fix issues causing GitHub checks to fail

Author: Sergey Zhukov

datafusion-examples/examples/query_planning/parse_sql_expr.rs

@@ -32,10 +32,10 @@ use datafusion::{
 /// The code in this example shows how to:
 ///
 /// 1. [`simple_session_context_parse_sql_expr_demo`]: Parse a simple SQL text into a logical
-///     expression using a schema at [`SessionContext`].
+///   expression using a schema at [`SessionContext`].
 ///
 /// 2. [`simple_dataframe_parse_sql_expr_demo`]: Parse a simple SQL text into a logical expression
-///     using a schema at [`DataFrame`].
+///   using a schema at [`DataFrame`].
 ///
 /// 3. [`query_parquet_demo`]: Query a parquet file using the parsed_sql_expr from a DataFrame.
 ///

datafusion-examples/examples/query_planning/plan_to_sql.rs

@@ -43,21 +43,21 @@ use std::sync::Arc;
 /// The code in this example shows how to:
 ///
 /// 1. [`simple_expr_to_sql_demo`]: Create a simple expression [`Exprs`] with
-///     fluent API and convert to sql suitable for passing to another database
+///   fluent API and convert to sql suitable for passing to another database
 ///
 /// 2. [`simple_expr_to_pretty_sql_demo`] Create a simple expression
-///     [`Exprs`] with fluent API and convert to sql without extra parentheses,
-///     suitable for displaying to humans
+///   [`Exprs`] with fluent API and convert to sql without extra parentheses,
+///   suitable for displaying to humans
 ///
 /// 3. [`simple_expr_to_sql_demo_escape_mysql_style`]" Create a simple
-///     expression [`Exprs`] with fluent API and convert to sql escaping column
-///     names in MySQL style.
+///   expression [`Exprs`] with fluent API and convert to sql escaping column
+///   names in MySQL style.
 ///
 /// 4. [`simple_plan_to_sql_demo`]: Create a simple logical plan using the
-///     DataFrames API and convert to sql string.
+///   DataFrames API and convert to sql string.
 ///
 /// 5. [`round_trip_plan_to_sql_demo`]: Create a logical plan from a SQL string, modify it using the
-///     DataFrames API and convert it back to a  sql string.
+///   DataFrames API and convert it back to a  sql string.
 ///
 /// 6. [`unparse_my_logical_plan_as_statement`]: Create a custom logical plan and unparse it as a statement.
 ///