exclude solutions from site search

docs/10_xray_solutions.md

+---
+search:
+  exclude: true
+---
 ```python tags=["initialize"]
 from matplotlib import pyplot as plt 
 import numpy as np

docs/11_nearly_free_electron_model_solutions.md

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+search:
+  exclude: true
+---
 # Solutions for lecture 11 exercises
 
 ```python tags=["initialize"]

docs/12_band_structures_in_higher_dimensions_solutions.md

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+search:
+  exclude: true
+---
 # Solutions for lecture 12 exercises
 
 ```python tags=["initialize"]

docs/13_semiconductors_solutions.md

+---
+search:
+  exclude: true
+---
 ```python tags=["initialize"]
 from matplotlib import pyplot as plt 
 import numpy as np

docs/14_doping_and_devices_solutions.md

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+search:
+  exclude: true
+---
 # Solutions for lecture 14 exercises
 
 ```python tags=["initialize"]

docs/1_einstein_model_solutions.md

 ---
+search:
+  exclude: true
 jupyter:
   jupytext:
     text_representation:

docs/2_debye_model_solutions.md

 ---
+search:
+  exclude: true
 jupyter:
   jupytext:
     text_representation:

docs/3_drude_model_solutions.md

+---
+search:
+  exclude: true
+---
 # Solutions for Drude model exercises
 
 ### Exercise 1: Extracting quantities from basic Hall measurements

docs/4_sommerfeld_model_solutions.md

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+search:
+  exclude: true
+---
 # Solutions for exercises lecture 4: Sommerfeld model
 
 ### Warm-up questions

docs/5_atoms_and_lcao_solutions.md

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+search:
+  exclude: true
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 # Solutions for LCAO model exercises
 
 ### Exercise 1

docs/6_bonds_and_spectra_solutions.md

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+search:
+  exclude: true
+---
 # Solutions for bonds and spectra
 
 ### Warm-up exercises

docs/7_tight_binding_model_solutions.md

+---
+search:
+  exclude: true
+---
 ```python tags=["initialize"]
 import matplotlib
 from matplotlib import pyplot

docs/8_many_atoms_solutions.md

+---
+search:
+  exclude: true
+---
 ```python tags=["initialize"]
 import matplotlib
 from matplotlib import pyplot

docs/9_crystal_structure_solutions.md

+---
+search:
+  exclude: true
+---
 ```python tags=["initialize"]
 from matplotlib import pyplot as plt 
 import numpy as np