style: fix doc indentation (#742)

Author: molpopgen

src/lib.rs

@@ -54,8 +54,8 @@
 //!     * [`crate::metadata::MigrationMetadata`]
 //!     * [`crate::metadata::PopulationMetadata`]
 //!
-//!     To see these derive macros in action, take a look
-//!     [`here`](metadata).
+//!   To see these derive macros in action, take a look
+//!   [`here`](metadata).
 //!         
 //! To add features to your `Cargo.toml` file:
 //!

src/table_collection.rs

@@ -1540,9 +1540,9 @@ impl TableCollection {
     /// # Parameters
     ///
     /// * `f`: a function.  The function is passed the current table
-    ///    collection and each [`crate::node_table::NodeTableRow`].
-    ///    If `f` returns `true`, the index of that row is included
-    ///    in the return value.
+    ///   collection and each [`crate::node_table::NodeTableRow`].
+    ///   If `f` returns `true`, the index of that row is included
+    ///   in the return value.
     ///
     /// # Examples
     ///
@@ -1585,10 +1585,10 @@ impl TableCollection {
     /// # Return value
     /// - `Ok(None)`: when truncation leads to empty edge table.
     /// - `Ok(Some(TableCollection))`: when trunction is successfully performed
-    ///    and results in non-empty edge table. The table collection is sorted.
+    ///   and results in non-empty edge table. The table collection is sorted.
     /// - `Error(TskitError)`: Any errors from the C API propagate. An
-    ///    [TskitError::RangeError] will occur when `intervals` are not
-    ///    sorted.
+    ///   [TskitError::RangeError] will occur when `intervals` are not
+    ///   sorted.
     ///
     /// # Notes
     ///

src/trees/treeseq.rs

@@ -366,10 +366,10 @@ impl TreeSequence {
     /// # Return value
     /// - `Ok(None)`: when truncation leads to empty edge table.
     /// - `Ok(Some(TableCollection))`: when trunction is successfully performed
-    ///    and results in non-empty edge table. The tables are sorted.
+    ///   and results in non-empty edge table. The tables are sorted.
     /// - `Error(TskitError)`: Any errors from the C API propagate. An
-    ///    [TskitError::RangeError] will occur when `intervals` are not
-    ///    sorted.
+    ///   [TskitError::RangeError] will occur when `intervals` are not
+    ///   sorted.
     ///
     /// # Notes
     ///
@@ -604,9 +604,9 @@ impl TreeSequence {
     /// # Parameters
     ///
     /// * `f`: a function.  The function is passed the current table
-    ///    collection and each [`crate::node_table::NodeTableRow`].
-    ///    If `f` returns `true`, the index of that row is included
-    ///    in the return value.
+    ///   collection and each [`crate::node_table::NodeTableRow`].
+    ///   If `f` returns `true`, the index of that row is included
+    ///   in the return value.
     ///
     /// # Examples
     ///