diff --git a/doc/python/bio-alignment-chart.md b/doc/python/bio-alignment-chart.md
index 7e10ad3411a..52806d83931 100644
--- a/doc/python/bio-alignment-chart.md
+++ b/doc/python/bio-alignment-chart.md
@@ -29,10 +29,10 @@ jupyter:
     order: 1
     page_type: u-guide
     permalink: python/alignment-chart/
-    thumbnail: thumbnail/alignment-chart.png
+    thumbnail: thumbnail/alignment_chart.png
 ---
 
-## Alignment Viewer (link to dash alignment section below)
+## Alignment Viewer
 
 The Alignment Viewer (MSA) component is used to align multiple genomic or proteomic sequences from a FASTA or Clustal file. Among its extensive set of features, the multiple sequence alignment viewer can display multiple subplots showing gap and conservation info, alongside industry standard colorscale support and consensus sequence. No matter what size your alignment is, Alignment Viewer is able to display your genes or proteins snappily thanks to the underlying WebGL architecture powering the component. You can quickly scroll through your long sequence with a slider or a heatmap overview.
 
diff --git a/doc/python/bio-manhattanplot.md b/doc/python/bio-manhattanplot.md
index bb3a1e8e4e9..1e023da45a3 100644
--- a/doc/python/bio-manhattanplot.md
+++ b/doc/python/bio-manhattanplot.md
@@ -29,8 +29,8 @@ jupyter:
     name: Manhattan Plot
     order: 1
     page_type: u-guide
-    permalink: python/manhattan-plot/ 
-    thumbnail: thumbnail/manhttan-plot.png
+    permalink: python/manhattan-plot/
+    thumbnail: thumbnail/manhttan_plot.png
 ---
 
 ## Manhattan Plot
@@ -38,7 +38,7 @@ ManhattanPlot allows you to visualize genome-wide association studies (GWAS) eff
 
 ```python
 import pandas as pd
-import dash_bio 
+import dash_bio
 
 df = pd.read_csv('https://raw.githubusercontent.com/plotly/dash-bio-docs-files/master/manhattan_data.csv')
 
@@ -53,7 +53,7 @@ Change the color of the points that are considered significant.
 
 ```python
 import pandas as pd
-import dash_bio 
+import dash_bio
 
 
 df = pd.read_csv('https://raw.githubusercontent.com/plotly/dash-bio-docs-files/master/manhattan_data.csv')
diff --git a/doc/python/bio-volcano-plot.md b/doc/python/bio-volcano-plot.md
index bfa213ed921..7089b1ae969 100644
--- a/doc/python/bio-volcano-plot.md
+++ b/doc/python/bio-volcano-plot.md
@@ -30,7 +30,7 @@ jupyter:
     order: 1
     page_type: u-guide
     permalink: python/volcano-plot/
-    thumbnail: thumbnail/volcano-plot.png
+    thumbnail: thumbnail/volcano_plot.png
 ---
 
 ## VolcanoPlot
@@ -38,7 +38,7 @@ Volcano Plot interactively identifies clinically meaningful markers in genomic e
 
 ```python
 import pandas as pd
-import dash_bio 
+import dash_bio
 
 
 df = pd.read_csv(
@@ -57,7 +57,7 @@ Change the size of the points on the scatter plot, and the widths of the effect
 
 ```python
 import pandas as pd
-import dash_bio 
+import dash_bio
 
 df = pd.read_csv('https://raw.githubusercontent.com/plotly/dash-bio-docs-files/master/volcano_data1.csv')