group together for quicker scan

Author: abbycross

docs/guides/addons.mdx

@@ -1,11 +1,11 @@
 ---
-title: Qiskit addons
+title: Advanced techniques - Qiskit addons
 description: Understand the Qiskit addon tools, which help you build utility-grade quantum workflows.
 ---
 
 {/* cspell:ignore lightcones */}
 
-# Qiskit addons
+# Advanced techniques - Qiskit addons
 
 Qiskit addons are a collection of research capabilities for enabling algorithm discovery at the utility scale. These capabilities build on Qiskit's performant foundation of tools for creating and running quantum algorithms. They are provided as modular software components that can plug into a [workflow](/docs/guides/intro-to-patterns) to scale or design new quantum algorithms.
 
@@ -35,9 +35,8 @@ Many of these addons are also powered by the `qiskit-addon-utils` package. For m
       analyticsName="Documentation page: Optimization mapper"
       linkText="Browse documentation"
     />
-</CardGroup>
 
-<CardGroup>
+
     <Card
       title="Operator backpropagation"
       description="Operator backpropagation (OBP) reduces circuit depth by trimming operations from the end at the cost of more operator measurements."
@@ -53,9 +52,8 @@ Many of these addons are also powered by the `qiskit-addon-utils` package. For m
       analyticsName="Documentation page: Circuit cutting"
       linkText="Browse documentation"
     />
-</CardGroup>
 
-<CardGroup>
+
     <Card
       title="Matrix-free Measurement Mitigation"
       description="Matrix-free Measurement Mitigation (M3) is a package for scalable quantum measurement error mitigation that can be computed in parallel."
@@ -78,9 +76,8 @@ Many of these addons are also powered by the `qiskit-addon-utils` package. For m
       analyticsName="Documentation page: PNA"
       linkText="Browse documentation"
     />
-</CardGroup>
 
-<CardGroup>
+
     <Card
       title="Sample-based quantum diagonalization"
       description="Sample-based quantum diagonalization (SQD) classically post-processes noisy quantum samples to yield more accurate eigenvalue estimations of quantum system Hamiltonians."