[BUGFIX] Remove superfluous blank character (#431)

In the current frontend rendering, the tag `blockquote` is incorrectly output with a space `blo ckquote` due to the line break in RST format.

Co-authored-by: Eric Harrer <[email protected]>

Documentation/PageTsconfig/Rte.rst

@@ -430,8 +430,7 @@ allowTags
     Tags to allow. Notice, this list is  *added* to the default list,
     which you see here:
 
-    b,i,u,a,img,br,div,center,pre,font,hr,sub,sup,p,strong,em,li,ul,ol,blo
-    ckquote,strike,span
+    b,i,u,a,img,br,div,center,pre,font,hr,sub,sup,p,strong,em,li,ul,ol,blockquote,strike,span
 
 .. index::
    RTE; Tags outside paragraphs