Update examples/tutorials/analysis-1d/spectral_analysis_rad_max.py
@@ -53,7 +53,7 @@ values are stored in additional `FITS` data unit, named
`Gammapy` provides a class to automatically read these values,
`~gammapy.irf.RadMax2D`, for both cases (fixed or energy-dependent
-:math:`:math:`\\theta` cut). In this notebook we will focus on how to perform a
+:math:`\\theta` cut). In this notebook we will focus on how to perform a
spectral extraction with a point-like IRF with an energy-dependent
:math:`\\theta` cut. We remark that in this case a
`~regions.PointSkyRegion` (and not a `~regions.CircleSkyRegion`)
