update cran comments and readme. remove plos link which fails

Author: johnmackintosh

README.Rmd

@@ -140,7 +140,7 @@ signals %>%
 This package makes no attempt to identify or highlight 'trends' (consecutively increasing or decreasing points) or shorter 'shifts' of runs below the median.
 In 8 years of working with QI data, I very rarely see trends, and when they do appear, they tend to result after a period of process degradation, when the process begins to return back to its natural median state. 
 
-In addition, [research by qicharts2 author Jacob Anhoej shows that the trend rule is not reliable](https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0121349). There are no plans to add tests to identify trends to the package functionality.
+In addition, research by qicharts2 author Jacob Anhoej shows that the trend rule is not reliable. There are no plans to add tests to identify trends to the package.
 
 However, analysts are often asked to apply all the run chart rules.  
 In this case, if you need to apply the rules for trend , and still have the ability to revise run chart medians, you should consider using [the runchart package by Joseph Adams](https://github.com/jsphdms/runchart).

README.md

@@ -162,11 +162,9 @@ see trends, and when they do appear, they tend to result after a period
 of process degradation, when the process begins to return back to its
 natural median state.
 
-In addition, [research by qicharts2 author Jacob Anhoej shows that the
-trend rule is not
-reliable](https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0121349).
-There are no plans to add tests to identify trends to the package
-functionality.
+In addition, research by qicharts2 author Jacob Anhoej shows that the
+trend rule is not reliable. There are no plans to add tests to identify
+trends to the package.
 
 However, analysts are often asked to apply all the run chart rules.  
 In this case, if you need to apply the rules for trend , and still have

cran-comments.md

@@ -2,7 +2,7 @@
 
 This is a resubmission. In this version I have:  
 
-* fully specified the url in readme.md to include the protocol (https://johnmackintosh.github.io/runcharter)  
+* fully specified the url in readme.md to include the protocol and trailing slash (https://johnmackintosh.github.io/runcharter/)  
 
 
 ## Test environments