Update to the acknowledgement

Author: mcguinlu

README.Rmd

@@ -154,6 +154,6 @@ This project is licensed under the MIT License - see the [LICENSE.md](https://gi
 
 ## Acknowledgments
 
-* The `rob_summary()` function was based on code forwarded by a colleague. I have recently learnt that this code was adapted from the wonderful "[Doing Meta-Analysis in R](https://bookdown.org/MathiasHarrer/Doing_Meta_Analysis_in_R/)" guide, so I would like to retrospectively acknowledge the authors for their indirect help. 
+* The `rob_summary()` function was based on code forwarded by a colleague. I have recently learnt that this code was adapted from that presented in the wonderful "[Doing Meta-Analysis in R](https://bookdown.org/MathiasHarrer/Doing_Meta_Analysis_in_R/plotting-the-summary.html)" guide, so I would like to acknowledge the authors here. 
 * [Emily Kothe](https://github.com/ekothe) for help in fixing `ggplot2` coding issues.
 * [Eliza Grames](https://github.com/elizagrames) for creating the `robvis` hex sticker.

README.md

@@ -182,10 +182,9 @@ file for details.
 
   - The `rob_summary()` function was based on code forwarded by a
     colleague. I have recently learnt that this code was adapted from
-    the wonderful “[Doing Meta-Analysis in
-    R](https://bookdown.org/MathiasHarrer/Doing_Meta_Analysis_in_R/)”
-    guide, so I would like to retrospectively acknowledge the authors
-    for their indirect help.
+    that presented in the wonderful “[Doing Meta-Analysis in
+    R](https://bookdown.org/MathiasHarrer/Doing_Meta_Analysis_in_R/plotting-the-summary.html)”
+    guide, so I would like to acknowledge the authors here.
   - [Emily Kothe](https://github.com/ekothe) for help in fixing
     `ggplot2` coding issues.
   - [Eliza Grames](https://github.com/elizagrames) for creating the