remove stray space in DESCRIPTION doi

Author: dwinter

DESCRIPTION

@@ -1,5 +1,5 @@
 Package: pafr
-Title: Read, manipulate and visualize 'Pairwise mApping Format' data
+Title: Read, Manipulate and Visualize 'Pairwise mApping Format' Data
 Version: 0.0.2
 Authors@R: c(
     person("David", "Winter", 
@@ -14,7 +14,9 @@ Authors@R: c(
             email = "[email protected]", 
             role = c("ctb"), 
             comment  = c(ORCID = "0000-0003-1936-0236")))
-Description: Provides functions to read pairwise sequence alignments in the 'PAF' format used by 'minimap2' and 'miniasm'. 
+Description: Provides functions to read, process and visualize pairwise sequence 
+ alignments in the 'PAF' format used by 'minimap2' and other whole-genome aligners. 
+ 'minimap2' is described by Li H. (2018) <doi:10.1093/bioinformatics/bty191>.
 Depends:
     R (>= 3.4.4),
     ggplot2,