Fix some broken links

docs/en/operations/system-tables/replication_queue.md

@@ -70,12 +70,12 @@ num_tries:              36
 last_exception:         Code: 226, e.displayText() = DB::Exception: Marks file '/opt/clickhouse/data/merge/visits_v2/tmp_fetch_20201130_121373_121384_2/CounterID.mrk' doesn't exist (version 20.8.7.15 (official build))
 last_attempt_time:      2020-12-08 17:35:54
 num_postponed:          0
-postpone_reason:        
+postpone_reason:
 last_postpone_time:     1970-01-01 03:00:00
 ```
 
 **See Also**
 
--   [Managing ReplicatedMergeTree Tables](../../sql-reference/statements/system.md/#query-language-system-replicated)
+-   [Managing ReplicatedMergeTree Tables](../../sql-reference/statements/system.md#query-language-system-replicated)
 
 [Original article](https://clickhouse.tech/docs/en/operations/system_tables/replication_queue) <!--hide-->

docs/en/sql-reference/statements/alter/ttl.md

@@ -18,7 +18,7 @@ ALTER TABLE table_name MODIFY TTL ttl_expression;
 TTL-property can be removed from table with the following query:
 
 ```sql
-ALTER TABLE table_name REMOVE TTL 
+ALTER TABLE table_name REMOVE TTL
 ```
 
 **Example**
@@ -81,5 +81,5 @@ The `TTL` is no longer there, so the second row is not deleted:
 
 ### See Also
 
-- More about the [TTL-expression](../../../../sql-reference/statements/create/table#ttl-expression).
-- Modify column [with TTL](../../../../sql-reference/statements/alter/column#alter_modify-column).
+- More about the [TTL-expression](../../../../sql-reference/statements/create/table.md#ttl-expression).
+- Modify column [with TTL](../../../../sql-reference/statements/alter/column.md#alter_modify-column).

docs/en/sql-reference/statements/create/table.md

@@ -59,7 +59,7 @@ There can be other clauses after the `ENGINE` clause in the query. See detailed
 
 ## NULL Or NOT NULL Modifiers {#null-modifiers}
 
-`NULL` and `NOT NULL` modifiers after data type in column definition allow or do not allow it to be [Nullable](../../../sql-reference/data-types/nullable.md#data_type-nullable). 
+`NULL` and `NOT NULL` modifiers after data type in column definition allow or do not allow it to be [Nullable](../../../sql-reference/data-types/nullable.md#data_type-nullable).
 
 If the type is not `Nullable` and if `NULL` is specified, it will be treated as `Nullable`; if `NOT NULL` is specified, then no. For example, `INT NULL` is the same as `Nullable(INT)`. If the type is `Nullable` and `NULL` or `NOT NULL` modifiers are specified, the exception will be thrown.
 
@@ -109,16 +109,16 @@ It is not possible to set default values for elements in nested data structures.
 
 ## Primary Key {#primary-key}
 
-You can define a [primary key](../../../engines/table-engines/mergetree-family/mergetree.md#primary-keys-and-indexes-in-queries) when creating a table. Primary key can be specified in two ways: 
+You can define a [primary key](../../../engines/table-engines/mergetree-family/mergetree.md#primary-keys-and-indexes-in-queries) when creating a table. Primary key can be specified in two ways:
 
 - Inside the column list
 
 ``` sql
-CREATE TABLE db.table_name 
-( 
-    name1 type1, name2 type2, ..., 
+CREATE TABLE db.table_name
+(
+    name1 type1, name2 type2, ...,
     PRIMARY KEY(expr1[, expr2,...])]
-) 
+)
 ENGINE = engine;
 ```
 
@@ -126,9 +126,9 @@ ENGINE = engine;
 
 ``` sql
 CREATE TABLE db.table_name
-( 
+(
     name1 type1, name2 type2, ...
-) 
+)
 ENGINE = engine
 PRIMARY KEY(expr1[, expr2,...]);
 ```
@@ -333,5 +333,3 @@ SELECT * FROM base.t1;
 │ 3 │
 └───┘
 ```
-
- [Original article](https://clickhouse.tech/docs/en/sql-reference/statements/create/table) <!--hide-->

docs/en/sql-reference/table-functions/url.md

@@ -27,7 +27,7 @@ A table with the specified format and structure and with data from the defined `
 
 **Examples**
 
-Getting the first 3 lines of a table that contains columns of `String` and [UInt32](../../sql-reference/data-types/int-uint.md) type from HTTP-server which answers in [CSV](../../interfaces/formats.md/#csv) format.
+Getting the first 3 lines of a table that contains columns of `String` and [UInt32](../../sql-reference/data-types/int-uint.md) type from HTTP-server which answers in [CSV](../../interfaces/formats.md#csv) format.
 
 ``` sql
 SELECT * FROM url('http://127.0.0.1:12345/', CSV, 'column1 String, column2 UInt32') LIMIT 3;