fix readme

README.md

 # Bachelor of Applied Data Science: Data Challenges Unit Resources
 
-## Issues
-
-* Pandas-DataFrames/DosesWrangling.ipynb broken - seem to have the wrong data file?
-
-## By Topic
+## Sections by Topic
 
 * [Project Tools](Project-Tools)
 * [Python & Jupyter](Python-Jupyter)
@@ -23,7 +19,7 @@
     * [Image Features](Topic-Hints/Image-Features)
     * [Stock Portfolios](Topic-Hints/Stock-Portfolios)
 
-## By Unit
+## Weekly Notebooks by Unit
 
 ### ADS1001
 
@@ -36,7 +32,7 @@
 * Week 7 [Aggregating and Grouping Data](Pandas-DataFrames/07-AggregationGrouping.ipynb)
 * Week 8 [Merging and Joining Data](Pandas-DataFrames/Merging/MergeJoinIntro.ipynb)
 * Week 9 [Intro to Linear Regression](Machine-Learning/Supervised-Methods/Regression/03-IntroLinearRegression.ipynb)
-* Week 10 [Intro to Linear Regression (Dupe?)](Machine-Learning/Supervised-Methods/Regression/03-IntroLinearRegression.ipynb)
+* Week 10 [Intro to Linear Regression](Machine-Learning/Supervised-Methods/Regression/03-IntroLinearRegression.ipynb)
 * Week 11 [K Nearest Neighbours (kNN) Classification](Machine-Learning/Supervised-Methods/K-Nearest-Neighbours.ipynb)
 
 ### ADS1002