added references sections back in (will manually remove them in pdf build)

Author: trevorcampbell

source/classification1.md

@@ -1975,6 +1975,8 @@ and guidance that the worksheets provide will function as intended.
 
 +++
 
+## References
+
 ```{bibliography}
 :filter: docname in docnames
 ```

source/classification2.md

@@ -2207,6 +2207,8 @@ and guidance that the worksheets provide will function as intended.
 
 +++
 
+## References
+
 ```{bibliography}
 :filter: docname in docnames
 ```

source/clustering.md

@@ -1065,6 +1065,8 @@ and guidance that the worksheets provide will function as intended.
 
 +++
 
+## References
+
 ```{bibliography}
 :filter: docname in docnames
 ```

source/inference.md

@@ -1363,6 +1363,8 @@ and guidance that the worksheets provide will function as intended.
 
 +++
 
+## References
+
 ```{bibliography}
 :filter: docname in docnames
 ```

source/intro.md

@@ -1235,6 +1235,8 @@ and guidance that the worksheets provide will function as intended.
 
 +++
 
+## References
+
 ```{bibliography}
 :filter: docname in docnames
 ```

source/jupyter.md

@@ -518,6 +518,8 @@ underscore (`_`).
 
 +++
 
+## References
+
 ```{bibliography}
 :filter: docname in docnames
 ```

source/reading.md

@@ -1628,6 +1628,8 @@ and guidance that the worksheets provide will function as intended.
 
 +++
 
+## References
+
 ```{bibliography}
 :filter: docname in docnames
 ```

source/regression1.md

@@ -1206,6 +1206,8 @@ and guidance that the worksheets provide will function as intended.
 
 +++
 
+## References
+
 ```{bibliography}
 :filter: docname in docnames
 ```

source/regression2.md

@@ -1397,6 +1397,8 @@ and guidance that the worksheets provide will function as intended.
 
 +++
 
+## References
+
 ```{bibliography}
 :filter: docname in docnames
 ```

source/version-control.md

@@ -1132,6 +1132,8 @@ you can expand your knowledge through the resources listed below:
 
 +++
 
+## References
+
 ```{bibliography}
 :filter: docname in docnames
 ```