Updates to geometry guide titles

Updates to geometry guide titles to replace : with -. This will prevent dev site builds from breaking.

Author: mohi9282

guide/15-working-with-geometries/part1_introduction_what_is_geometry.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Part 1: Introduction - what is geometry?"
+    "# Part 1 - Introduction - what is geometry?"
    ]
   },
   {
@@ -335,4 +335,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 1
-}
+}

guide/15-working-with-geometries/part2_working_with_geometries.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Part 2:  Working with Geometries"
+    "# Part 2 - Working with Geometries"
    ]
   },
   {
@@ -1202,4 +1202,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 4
-}
+}

guide/15-working-with-geometries/part3_spatial_operations_on_geometries.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Part 3: Spatial operations on geometries"
+    "# Part 3 - Spatial operations on geometries"
    ]
   },
   {
@@ -3169,4 +3169,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 2
-}
+}

guide/15-working-with-geometries/part4_spatial_filters.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Part 4: Applying spatial filters"
+    "# Part 4 - Applying spatial filters"
    ]
   },
   {
@@ -2043,4 +2043,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 2
-}
+}