Docgen: Replace line breaks with spaces and remove line-ending hyphens (

#49635)

* Docgen: Replace line breaks in the description with spaces

* Remove unintended hyphenation

* Update unit test

* Update comment

* Rebuild docs

docs/reference-guides/data/data-core-block-directory.md

@@ -46,8 +46,7 @@ _Returns_
 
 ### getInstalledBlockTypes
 
-Returns the block types that have been installed on the server in this
-session.
+Returns the block types that have been installed on the server in this session.
 
 _Parameters_
 
@@ -59,8 +58,7 @@ _Returns_
 
 ### getNewBlockTypes
 
-Returns block types that have been installed on the server and used in the
-current post.
+Returns block types that have been installed on the server and used in the current post.
 
 _Parameters_
 
@@ -72,8 +70,7 @@ _Returns_
 
 ### getUnusedBlockTypes
 
-Returns the block types that have been installed on the server but are not
-used in the current post.
+Returns the block types that have been installed on the server but are not used in the current post.
 
 _Parameters_
 
@@ -117,8 +114,7 @@ _Returns_
 
 ### addInstalledBlockType
 
-Returns an action object used to add a block type to the "newly installed"
-tracking list.
+Returns an action object used to add a block type to the "newly installed" tracking list.
 
 _Parameters_
 
@@ -142,8 +138,7 @@ _Returns_
 
 ### fetchDownloadableBlocks
 
-Returns an action object used in signalling that the downloadable blocks
-have been requested and are loading.
+Returns an action object used in signalling that the downloadable blocks have been requested and are loading.
 
 _Parameters_
 
@@ -167,8 +162,7 @@ _Returns_
 
 ### receiveDownloadableBlocks
 
-Returns an action object used in signalling that the downloadable blocks
-have been updated.
+Returns an action object used in signalling that the downloadable blocks have been updated.
 
 _Parameters_
 
@@ -181,8 +175,7 @@ _Returns_
 
 ### removeInstalledBlockType
 
-Returns an action object used to remove a block type from the "newly installed"
-tracking list.
+Returns an action object used to remove a block type from the "newly installed" tracking list.
 
 _Parameters_