updating element_as_gdf.rst

[jGaboardi]

attempting correction of doc error in spaghetti.element_as_gdf.rst

[coveralls]

Pull Request Test Coverage Report for Build 943

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 417 unchanged lines in 4 files lost coverage.
• Overall coverage remained the same at 97.52%

---

Files with Coverage Reduction	New Missed Lines	%
spaghetti/util.py	3	100.0%
spaghetti/network.py	72	94.92%
spaghetti/tests/test_network.py	167	99.55%
spaghetti/tests/test_network_api.py	175	99.56%

Totals
Change from base Build 942:	0.0%
Covered Lines:	1219
Relevant Lines:	1250

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 943

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 417 unchanged lines in 4 files lost coverage.
• Overall coverage remained the same at 97.52%

---

Files with Coverage Reduction	New Missed Lines	%
spaghetti/util.py	3	100.0%
spaghetti/network.py	72	94.92%
spaghetti/tests/test_network.py	167	99.55%
spaghetti/tests/test_network_api.py	175	99.56%

Totals
Change from base Build 942:	0.0%
Covered Lines:	1219
Relevant Lines:	1250

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 943

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 417 unchanged lines in 4 files lost coverage.
• Overall coverage remained the same at 97.52%

---

Files with Coverage Reduction	New Missed Lines	%
spaghetti/util.py	3	100.0%
spaghetti/network.py	72	94.92%
spaghetti/tests/test_network.py	167	99.55%
spaghetti/tests/test_network_api.py	175	99.56%

Totals
Change from base Build 942:	0.0%
Covered Lines:	1219
Relevant Lines:	1250

---

💛 - Coveralls