Update footnote.R

Removed the extra line on the @param description for fixed_small_size.
diff --git a/R/footnote.R b/R/footnote.R
index 41e6925..1c9dcac 100644
--- a/R/footnote.R
+++ b/R/footnote.R
@@ -27,7 +27,6 @@
 #' @param fixed_small_size T/F When you want to keep the footnote small after
 #' specifying large font size with the kable_styling() (e.g. ideal font for headers
 #' and table content with small font in footnotes). 
-#' keeping the footnote small. 
 #' @param general_title Section header for general footnotes. Default is
 #' "Note: ".
 #' @param number_title Section header for number footnotes. Default is "".