Hide authors in the index pages

notebooks/dcr_index.md

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-Direct Current Resistivity
-======================
+---
+authors: {}
+---
+
+# Direct Current Resistivity
 
 Direct current resistivity data are simulated using functionality within the ``SimPEG.electromagnetics.static.resistivity`` module. Here, we provide a multitude of introductory and indermediate level tutorials for forward simulation and inversion of direct current resistivity data. Links to each tutorial can be accessed below or from the left-side menu.
 

notebooks/fdem_index.md

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-Frequency-Domain Electromagnetics
-==============================
+---
+authors: {}
+---
+
+# Frequency-Domain Electromagnetics
 
 In this chapter, we publish code comparisons and validations for frequency-domain electromagnetic modeling packages.
 In SimPEG, the *SimPEG.electromagnetics.frequency_domain* module is used for modeling frequency-domain data.

notebooks/gravity_index.md

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-Gravity
-=======
+---
+authors: {}
+---
+
+# Gravity
 
 Gravity anomaly and gravity gradiometry data are simulated using functionality within the ``SimPEG.potential_fields.gravity`` module. Here, we provide a multitude of introductory and indermediate level tutorials for forward simulation and inversion of gravity anomaly and gravity gradiometry data. Links to each tutorial can be accessed below or from the left-side menu.
 

notebooks/ip_index.md

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-Induced Polarization
-======================
+---
+authors: {}
+---
+
+# Induced Polarization
+
 
 Induced polarization data are simulated using functionality within the ``SimPEG.electromagnetics.static.induced_polarization`` module. Here, we provide a multitude of introductory and indermediate level tutorials for forward simulation and inversion of induced polarization data. Links to each tutorial can be accessed below or from the left-side menu.
 
@@ -22,4 +26,4 @@ Schematic illustrating the physics of the DC/IP method ([image source](https://e
 <br />
 
 [3D Inversion](06-ip/inv_ip_3d) $({\color{orange}Intermediate}$, ${\color{orange}Moderate})$
-<br />
+<br />

notebooks/magnetics_index.md

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-Magnetics
-=========
+---
+authors: {}
+---
+
+# Magnetics
 
 In this chapter, we publish code comparisons and validations for magnetics and magnetic gradiometry modeling packages.
 In SimPEG, the *SimPEG.potential_fields.magnetics* module is used for modeling magnetics and gradiometry data.
@@ -20,4 +23,4 @@ Global scale magnetic anomalies over Africa ([image source](https://upload.wikim
 <br />
 
 [3D Inversion of TMI Data to Recover a Susceptibility Model](04-magnetics/inv_magnetics_induced_3d) $({\color{orange}Intermediate}$, ${\color{green}Lightweight})$
-<br />
+<br />

notebooks/tdem_index.md

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-Time-Domain Electromagnetics
-============================
+---
+authors: {}
+---
+
+# Time-Domain Electromagnetics
 
 In this chapter, we publish code comparisons and validations for time-domain electromagnetic modeling packages.
 In SimPEG, the