Update translation sources

Author: Onvember

locale/en/reference/reference_lua/box_space/create_index.pot

@@ -310,7 +310,7 @@ msgstr ""
 msgid "any set of octets, up to the :ref:`maximum length <limitations_bytes_in_index_key>`. A varbinary byte sequence does not have a :ref:`collation <index-collation>` because its contents are not UTF-8 characters"
 msgstr ""
 
-msgid "memtx TREE, HASH or BITSET (since version 2.7) indexes;"
+msgid "memtx TREE, HASH or BITSET (since version :doc:`2.7.1 </release/2.7.1>`) indexes;"
 msgstr ""
 
 msgid "``integer``"

locale/en/release/2.7.1.pot

@@ -44,7 +44,7 @@ msgstr ""
 msgid "Now it is allowed to define an index without extra braces when there is only one part: ``parts = {field1, type1, ...}`` (gh-2866)."
 msgstr ""
 
-msgid "Bitset index now supports the varbinary type (gh-5392)."
+msgid ":ref:`Bitset index <indexes-bitset>` now supports the varbinary type (gh-5392)."
 msgstr ""
 
 msgid "Index-related options now can’t be specified in their definition due to a more pedantic key-parts verification (gh-5473)."